Is it even possible to sue a China-based company from the US? Would you even be able to seek any remedy other than banning import/sale of its product?
nekusar•Aug 26, 2026
Sure block them.
Or they can pay statutory maximum copyright violations of $120000 per copy violated.
Per copy.
LoganDark•Aug 26, 2026
This sounds more like a wish?
polski-g•Aug 26, 2026
They could sue amazon to get a list of Bambu buyers, then go after them.
ChickeNES•Aug 26, 2026
You want them to go after the buyers??
polski-g•Aug 26, 2026
Yes. It's the only way to cause material harm to the company.
ChickeNES•Aug 26, 2026
Not at all, do you not understand how customs works? What cause of action do you propose against the buyers? Do you not care about the law, you just want maximum retribution?
icehawk•Aug 26, 2026
How does that work when the buyers have already paid?
tylergetsay•Aug 26, 2026
Presumably they have _some_ assets in the USA
spott•Aug 26, 2026
Banning import/sale of the product into the US is worth a hell of a lot.
LoganDark•Aug 26, 2026
I wouldn't call that a win, though. I have a Bambu printer and it's very difficult to reproduce their tuning on open-source hardware or software. I think Klipper has vibration compensation now, but pressure advance and some other things require some tinkering and waste in order to set correctly, and you have to re-do them on any new nozzle/filament/temperature. Deciding nobody can have the software at all is completely opposite to the spirit of the license. "Yay, thanks to our challenge about this AGPL-licensed code, now even the binary is no longer available!" Sure, you can say it's harmful to the community to have features available without source code, but I wouldn't want the only alternative to be simply not having those features. (Anti-features are an exception)
dspillett•Aug 26, 2026
> Deciding nobody can have the software at all is completely opposite to the spirit of the license.
Any import block would be on the hardware, not the software. And the software would need to be released for other territories anyway.
LoganDark•Aug 26, 2026
As a buyer I'd be just as unhappy to be unable to get the hardware. I already have some, but if I wanted some new feature it doesn't have and that open-source definitely doesn't have, I'd be miffed to say the least if I couldn't get it just because Bambu didn't release the source code.
asveikau•Aug 26, 2026
It's been pretty weird and disappointing to see the way Bambu has taken over with these practices.
If you go on social media where people are talking about 3D printing, a lot of folks are not developers and don't know anything about software licensing. It is hard to explain this problem to them, or why anyone should care. Meanwhile for many of these people, Bambu is totally synonymous with 3D printing.
Prusa has attracted its own valid criticisms, but I think they are closer to being right on these issues. They can't compete with Bambu on price.
svachalek•Aug 26, 2026
It's a shame because the Bambu product line is genuinely first class. They don't need to play these games to compete, and could have won a lot of genuine good will by giving a little back to the community.
wongarsu•Aug 26, 2026
Haven't these (A)GPL violations been there for most of the company's history? It's the context around them that changed.
While the ecosystem was open few people cared about the network plugin, and apart from that plugin the Bambu Studio slicer is open source. Similarly there was little interest in calling out the suspected violation of their online slicer - it's probably just a headless variant of Bambu Studio. But when Bambu started closing their ecosystem and claiming that user agent headers are DRM everyone got justifiably upset, and this is a just outlet for that
asveikau•Aug 26, 2026
> apart from that plugin the Bambu Studio slicer is open source
I'm not a lawyer, but my understanding of the GPL is it's meant to block this kind of behavior. Certainly it's against the spirit of it.
dspillett•Aug 26, 2026
> and apart from that plugin the Bambu Studio slicer is open source
But IIRC the plugin itself contains code covered by the open source licenses, either that or being directly linked the way it is is considered sufficient for the requirements of the license to apply.
dofm•Aug 26, 2026
Bambu and Prusa are both engaged in harm.
But Prusa is only engaged in self-harm.
CamperBob2•Aug 26, 2026
What's Prusa doing wrong?
dofm•Aug 27, 2026
The Open Community Licence is a horrible mistake, even with the recent modifications.
mrheosuper•Aug 27, 2026
it's hard to convince people to past over bambu when the alternative is either: Crappier (Ender, Creality), or much more expensive (Prusa).
PonyoSunshine•Aug 26, 2026
We just purchased a brand new top of the line Bambu with all the accessories, only for it to be defective on arrival. Their front panel display uses such thin fonts, it makes it almost impossible to read without glasses, and their error codes just send you in infinite loops that make you want to pull your hair out. They really spin themselves as the end all and be all to turn key professional 3d printing, and the reality has been anything but. We are currently waiting on a new part from China that will show up when whomever knows and at best, and all they could offer us a minor credit towards spending more money that doesn't even equal an hours pay.
I wish I could talk better about them, but what a let down. I really hope someone really figures out how to put the screws to them over this GPL violation.
dgellow•Aug 26, 2026
That hasn’t been my experience, for me their software and hardware makes them the Apple of 3d printing. It’s something my mother could use, and everything works out of the box and is simple to maintain. The H2 series is awesome
miladyincontrol•Aug 26, 2026
Same, it doesnt get much more plug and play as theirs
m4rtink•Aug 26, 2026
What about Prusa printers - something they are missing/are not available in your area or something else ?
MindSpunk•Aug 26, 2026
They cost 3x as much
eknkc•Aug 26, 2026
Yeah, their devices simply worked and worked fine for us.
ChuckMcM•Aug 26, 2026
I think the Bambu case is a good one to litigate the AGPL but perhaps should start in the Court of International Trade. That court has the power to block imports as part of a TRO which would shut down a lot of their revenue from the US at least. Doing something similar in Europe would also help apply pressure. Takes lawyers and money though, of which there is certainly not enough of the latter.
Not to be too glib here, but its one of the paradoxes of "free software" which is there isn't any money generated by the licenses that keep it free. Where as "licensed" software has a revenue stream that is used to enforce the license against people who fail to honor it. The FSF can only do so much with their budget here.
Aurornis•Aug 26, 2026
The article says the SFC had a fundraiser and raised over $250,000 to hire a lawyer.
There's a confusing part of the article where he says that what he believes is a violation is something that a judge isn't going to care about. I don't know if he's implying that the judges aren't capable of interpreting the AGPL properly, or if he's admitting that the legal argument isn't as solid as they thought it was when they started. It's a confusing thing to say next to the broad claims about violations.
biker142541•Aug 26, 2026
That confused me as well. I interpreted as judges not having (much) precedent and potentially unable/unwilling to interpret along lines of the license intent. But that’s what courts in this process are there for IMO. If a well written license and a good case, then you need to start somewhere to set precedent.
ZiiS•Aug 26, 2026
He is saying a judge will not care that they are technically a separate download. They only care if the end result is complying with the spirit of the license.
pocksuppet•Aug 27, 2026
GPL licenses are so much interpreted along lines of license intent that a German judge ruled GPLv2 software couldn't be Tivoized.
JoshTriplett•Aug 26, 2026
I think he's saying the opposite: that "clever" attempts to work around the license aren't things a judge is going to appreciate.
Aurornis•Aug 26, 2026
That would make more sense. Thank you.
ChuckMcM•Aug 26, 2026
For background, I participated in a "small" action that Sun took against someone who was violating the Java license. The legal fees (in the late 90's) were 8.2 million dollars. $250K is nothing to sneeze at, its a solid 6 weeks of a single lawyer's time, maybe a couple of weeks for a small team. Against a company doing nearly a billion dollars a year in revenue[1] and owning 29% of the printer market? Add in a couple of expert witnesses which are essential to that sort of a case and you'll see that $250K isn't even table stakes. Sad, I know, but it is the way things are these days.
And the saddest thing is that Bambu knows this. They know that people who give away software are not a serious threat to them. And it is especially galling that the value they have extracted out of that software will pay the lawyers that keep you from preventing them from continuing to extract that value and keep it for themselves.
Lawyers earn 250k per 6 weeks? More than 2M per year?
ChuckMcM•Aug 26, 2026
Yes. Well they certainly bill at that rate, it goes some to the lawyer, some to rent, etc.
bonoboTP•Aug 26, 2026
Outrageous cartel then. For such amounts there would be plenty who would have intellectual chops to do the job, driving the price down. Legal costs are nowhere close to this outside the US.
LastTrain•Aug 27, 2026
IP litigation is absolutely that expensive, outside the US and inside. Didn’t you just come into this conversation unaware of what IP litigators earn?
Ancapistani•Aug 27, 2026
Can you imagine how litigious we'd be if legal services were cheaper?
Lawyers fees for a case like that also include expenses, and this would be on the high side.
Court fees, fees for accessing case law, experts, paralegals, etc.
You pay the lawyer and a big portion of that goes towards his costs for additional labour and everything else. A lawyer grossing $2m/year isn't bringing home anything close to that.
That said $250k for a single lawyer for 6 weeks seems high.
LastTrain•Aug 27, 2026
Yes. About 5-10% at a big firm earn that.
ChickeNES•Aug 26, 2026
I guess I need to buy another printer to fund the other side?
mschuster91•Aug 26, 2026
> I think the Bambu case is a good one to litigate the AGPL but perhaps should start in the Court of International Trade.
IMHO that kind of stuff would have to go through the WTO but unfortunately Trump gutted that one already way back in his first term.
WillPostForFood•Aug 26, 2026
Some context on the US/WTO conflict. It started under Obama, blocking reappointment of two judges. Trump in term 1 went all in, stopping all appointments. When Biden was elected he fully maintained and supported the policy of blocking judges. So it has been more of a bipartisan policy than "Trump gutted".
The article mentions reverse engineering the code.
But is there anything to stop reverse engineering the physical printer itself, improving on it by 10mm build volume in each direction, and releasing that?
It won't be a copy of the Bambu printer AND it can run the same software, truly freely.
sgarland•Aug 27, 2026
There’s no need to reverse engineer it, just build a Voron 2.4.
gnuplustoejam•Aug 26, 2026
The Chinese tech industry is built upon a foundation of GPL violations.
There is no way to stop it beyond getting CBP to block imports, which effectively amounts to shunning.
ZiiS•Aug 26, 2026
They built on a foundation of not respecting US intellectual property; copyright licenses were also ignored.
dspillett•Aug 26, 2026
Any intellectual property (though they only get away with internal transgressions if their government approves).
Unfortunately that seems to increasingly be the status quo these days, look at US companies and their attitude to IP when it suits them to ignore licenses for LLM training purposes.
Gigachad•Aug 27, 2026
IP will only be respected if there is a mutually beneficial reason to do it. The US would need to offer China something they need in exchange for enforcing IP.
The US does not respect the EU's Protected Designation of Origin laws because they have more to gain by ignoring them. China has more to gain by ignoring US IP laws.
Joel_Mckay•Aug 27, 2026
Shhh, don't point out the massive isomorphic plagiarism of GPL, markup user, and BSD licensed code.
People want to pretend LLM vector search compaction output isn't copyright and trademark violation. We are in the Napster phase of the market exploitation.
On a positive note there is nothing left of value to steal/scrape, so the problem will likely eventually be self-correcting. =3
Surac•Aug 26, 2026
would be nice it one could block programs from loading libs based GPL blacklists. Also linking shoudl be prohibited.. I know it is not possible
Aurornis•Aug 26, 2026
> Kühn said; they often rely on mechanisms that an actual judge is not going to care about. In this case, Bambu Studio would pop up a request to download "a little more stuff" with the classic choices of "Yes" or "Ask me later"; users eventually figure out that some functionality in the slicer does not work until they click "Yes". The extras that are downloaded are two .so files built from C++ source. Those shared-library files are dynamically loaded into the slicer—as can plainly be seen from the dlopen() calls in the source code that was released.
This seems to be the main complaint: They ship a separate .so as a plugin.
Saying that an actual judge is not going to care about it is confusing. Is this or is it not consistent with the license? Why wouldn't a judge care about something that is a license violation? I don't get it.
> violating GPLv2 by not providing the source for a Buildroot-based Linux (and other copyleft components) used in the firmware of some 3D-printer models. He downloaded the 300MB firmware image from the Bambu Lab web site, but was unable to find the source or an offer to provide it.
Is there some other technicality that I'm missing?
> Bambu Lab needed a slicer, of course, so it started shipping a modified PrusaSlicer (as Bambu Studio), which it was able to get via the AGPLv3, but without shipping any source code or an offer to provide it. That continued up through 2022 or 2023, Kühn said, until the pressure from the 3D-printing community effectively forced Bambu Lab to make a source release, which was, as is almost always the case for a first release, not the actual corresponding source code.
I googled Bambu's first Kickstarter. It shows July 2022 as the estimated ship date.
So the repo was public and available around the time that the Kickstarter ended. Seems fair? He acts like they were refusing until the community forced them to do it a year later, but the repo was live and open when the printers shipped.
I get that Bambu is supposed to be the enemy and we're not supposed to defend the enemy unless we want a lot of downvotes, but the reporting on this issue seems lacking any fact checking. I didn't try very hard but found contradictory evidence in the first Google link for several of the claims. The article is quoting someone speaking from memory to an audience so mistakes are understandable, but I would at minimum expect some cursory fact checking for someone reporting on it.
teddyh•Aug 26, 2026
Like JoshTriplett explains in other places in this thread, Kühn means that the judge will not care about Bambu Studio’s workarounds; i.e. that the judge will see through these as the tricks they are, and not allow Bambu Studio to get away with it.
FWIW the AGPL (which is a nonfree EULA trying to masquerade as a copyright license) has never been tested in court, so the fact that it is nonsensical has yet to actually be adjudicated.
Software and services aren’t the same, and the anticapitalist zealots at the FSF can’t square this circle no matter how hard they try.
Der_Einzige•Aug 26, 2026
Yup. IP abolitionism it turns out is a sword that can slay yourself too. I support abolishing it even to the point of making all EULA unenforceable for good.
bluGill•Aug 26, 2026
Generally, when you ask people who have any understanding of law, they respond, well, of course not. No one with any sanity at all would try and test the GPL in court. They know what's going to hold up.
I do believe that the GPL will eventually be broken. However, it won't be broken in ways such as happening now. It'll be broken when some company is able to show the court that they were doing a lot of things to ensure they weren't going to violate the GPL. And yet a rogue employee, unknown to the rest of the company, violated it despite being told not to. I don't know exactly what the courts will decide in this case. It's still going to come down to the copyright violation. However, it likely won't be a source code release. The GPL will hold up, they will just say the written requirements are to much and ??? . But again, this will only happen after the courts take a very detailed look at all the things the company is doing to ensure they didn't violate the GPL in the first place, which means we are likely looking at many, many years before the first such case. Anyone who isn't aware of the GPL and taking a lot of active effort to ensure they're not violating it, they won't be able to pull off this defense after the fact.
ChickeNES•Aug 26, 2026
You're talking about the GPL though, OP was talking the AGPL
bluGill•Aug 26, 2026
For this discussion it makes no difference.
ChickeNES•Aug 26, 2026
It very much does, as this is a AGPL violation being discussed, not a GPL violation.
dspillett•Aug 26, 2026
By "it doesn't make a difference" they meant that the argument applies equally for both, and if it fails for one it fails for both.
hWuxH•Aug 27, 2026
it literally makes no difference for the bambustsudio program you download.
GPL has the same corresponding source clause
toast0•Aug 27, 2026
> And yet a rogue employee, unknown to the rest of the company, violated it despite being told not to. I don't know exactly what the courts will decide in this case. It's still going to come down to the copyright violation. However, it likely won't be a source code release.
I would expect a court to compell a defendant to either comply with the license or cease distribution and possibly pay damages for unauthorized distribution... But I don't know that there's a good way to figure the damages and US statuatory damages likely don't apply because who registers their copyrights for open source code (or deposits copies with the Library of Congress)?
Infringement by a rouge employee, acting against policy, may be reason to limit punitve damages and stick to actual damages... But if it's an actual rogue employee acting against policy, I would expect the company to cease infringement, begin compliance, or negotiate for an alternative solution once notified about the issue anyway.
deepspace•Aug 26, 2026
The person I am replying to is an obvious troll, but it is worth mentioning that there is very little to "test in court". Basic copyright law says that you cannot copy someone else's code and distribute software based thereon. *GPL* provides a workaround, provided that you follow the terms of the license. If a court were to invalidate all of AGPL, the default fallback would simply be that nobody is able to distribute the software.
hamdingers•Aug 26, 2026
For current owners who want to avoid Bambu's servers entirely, consider LAN mode with OrcaSlicer and this open source reverse engineered networking plugin: https://github.com/ClusterM/open-bamboo-networking
I have verified that my P2S in LAN mode never attempts to make external connections at all (blocked it anyway, of course) and OrcaSlicer + this plugin never attempts to connect to any of Bambu's servers.
My P2S is easily the best printer I've ever had, they really do make incredible machines, it's a shame they have created this ridiculous situation just to (as far as I can tell) collect telemetry.
qwerpy•Aug 26, 2026
LAN mode works well with home assistant and some HACS Bambu integration. Takes some setup but then you get real time camera feed and all the nice sensors for temp, humidity, including any AMS you have. I connected mine to Bambu server for the app just to see what it does, and my home assistant setup still works over LAN. Great printers and for now offline modes work well.
doawoo•Aug 26, 2026
2nd this, I have my X1C blocked on any inet access, LAN only, it’s a very nice piece of hardware with questionable software :/
groos•Aug 26, 2026
The Bambu Labs mobile app doesn't work with LAN mode. I found this app for Android, "LanBu" which does a decent enough job. It's still in beta and wants to display ads. So far my PiHole has blocked all its ads so it's tolerable. I wouldn't mind paying for it, if it's a one-time free and it allowed access from outside my LAN.
It's excellent for monitoring and setting up automations around printer events, I use it all the time too.
knowaveragejoe•Aug 27, 2026
I run this on the home server w/ caddy-tailscale, and I can slice/print from anywhere with a nice easily rememberable domain name. I run a P1S in LAN mode and have it firewalled from actual internet access.
This still sends query to bambulab if they don’t use modified networking plugin, unfortunately.
simooooo•Aug 26, 2026
Is it faster to send prints than using the cloud Bambu service?
hamdingers•Aug 26, 2026
I only sent one test print through Bambu so I can't make a comparison, but it's <10s from clicking print to the printer starting its warmup dance.
Speed is not why I set my printer up this way though. I live in a state that may ban 3D printers unless they include invasive surveillance, so I wanted to get a high end pre-ban printer in case that becomes law.
WaxProlix•Aug 26, 2026
Is it possible to back out the firmware updates and setup that came along with this change to get self sufficient, or is that not necessary? I recall hearing that a firmware update made the printer (P1S in my case) phone home even potentially when in LAN mode. This is an area where I just kind of gave up and let it happen, though I kind of regret it now.
FloatArtifact•Aug 26, 2026
I know I'm worried when they're going to start mandating client-side scanning of 3D prints.
Oh shit, I didn’t realize that had been cracked. Nice, I’m gonna switch ASAP.
I bought a P2S, and then literally a few days later, the X2D came out. Thanks Microcenter, and your excellent customer service and return policy. The X2D is everything the P2S is, but with another nozzle.
InTheArena•Aug 27, 2026
This part gives me hope, but I have not been able to find the certificate:
Option B: cloud mode without Developer Mode
Starting with v2.0.0 the plugin can also drive a cloud-paired printer with verification left ON — no Developer Mode. This keeps the cloud features (cloud print dispatch, print history, MakerWorld) but is meant for advanced users, because it requires private slicer credentials that this project does not distribute.
Two things are needed:
1. Bambu's slicer credentials, which you provide yourself. Put slicer_cert.pem, slicer_key.pem and slicer_crl.pem in the plugin's config directory (or point at them with slicer_cert_pem / slicer_key_pem / slicer_crl_pem in obn.conf). The plugin uses the key to sign MQTT print commands and to install its app certificate on the printer. These are private credentials. This project does not ship them and gives no instructions on obtaining them — you have to find or extract them yourself, and you alone are responsible for ensuring your use complies with the applicable terms and law.
2. Two settings in obn.conf. Set block_cloud = 0 (the default 1 blocks cloud printing outright) and client_name = BambuStudio (the honest default client name is rejected by the cloud print API with HTTP 403).
With that in place you get signed MQTT commands, on-printer app-certificate install, cloud print dispatch, print history and MakerWorld — without touching Developer Mode.
What the default cloud_print = cloud_only actually uploads. Even in this mode the model itself normally stays on your network: for a print with a cloud record the plugin sends the .3mf straight to the printer over LAN FTPS, and only the record goes to Bambu — a project entry, a task entry (mode=lan_file) and a small config .3mf that print history uses for its thumbnails. That record is exactly what buys you the cloud extras: print history in Studio and Handy, and the ability to rate models on MakerWorld. The full model is uploaded to Bambu's servers only when Studio dispatches a pure cloud print (start_print), e.g. for a printer that is not reachable on your LAN.
You can limit even that: set cloud_print = try_lan_first or lan_only to print over the LAN without writing a cloud record at all, and cloud_hide_history = 1 to hide the cloud print history in Studio.
If you run neither Developer Mode nor valid credentials, the printer rejects every print / project_file command and shows on its screen:
I have never had any interest in using Bambu's cloud. It works in LAN mode with none of this rigamarole.
If you want to feed all your print activity to Bambu's servers anyway, why bother using an open source plugin in the first place?
dgellow•Aug 26, 2026
After reading the article I don’t understand what the downloaded components are blocking in the slicer. What features aren’t available?
hamdingers•Aug 26, 2026
It's the networking plugin that talks to the printer over the network (while exporting gobs of telemetry to Bambu's servers).
Without the networking plugin you cannot monitor your printer or send prints to it remotely. You can copy files to a flash drive and print that way.
knowaveragejoe•Aug 27, 2026
To be clear for anyone else reading: those are the official options. But there are plenty of alternatives that allow for using a Bambu remotely. It just won't be quite as polished an experience as finding a model in Handy and hitting print.
zamalek•Aug 26, 2026
It is so much worse than "just" AGPL, YouTube happened to rec this to me yesterday: https://youtu.be/mAm-kpiHRcw. Granted, there are much worse and more pressing evils in our world, but Bambu is just pure and utter evil.
Der_Einzige•Aug 26, 2026
I am gleeful at the idea that courts can't actually enforce open source compliance.
If your response is "Let's force TPP-style international trade courts to force AGPL compliance", well, you're the globalist that Bernie Sanders rightfully warned about and people like trump pretended/lied about being against as justification for why they get elected. I hope you never get what you want. The same crap will be used to patent surgical procedures and other IP in ways that are horrible for society.
You want to do fake software viral communism that's incompatible with how the legal system operates? You're poor as shit and can't hire good lawyers vs business because capitalism isn't favorable to you? That's why you're supposed to engineer something better than crapitalism. This is a grand challenge for the FOSS movement and why I am still broadly supportive of the reasons why someone like RMS votes/voted for the green party (and yes I know they are these days loony/crazy/compromised by the FSB)
Real FOSS is MIT. Learn to make your fake viral communist license have teeth or forever persist in this doomed world you have created.
select1•Aug 26, 2026
I have no issue with this. Bambu makes good products, the AGPL does not give you a license to access someone else's cloud servers.
dspillett•Aug 26, 2026
> does not give you a license to access someone else's cloud servers
That is not what people are asking for.
ramblurr•Aug 26, 2026
Bamboo has been sketch and proprietary since the beginning. It's such a shame to see the maker community get sucked in (though I guess there is precedence wrt Fusion et.al.)
ChuckMcM•Aug 26, 2026
It was really depressing when I realized that people will buy a sketchy product which is hurting the community and makers of non-sketchy products because "its cheaper and its not like my purchase is gonna change things one way or another."
It is selfish and short sighted, and it leaves their future impoverished, but in the moment they "got a good deal."
snapcaster•Aug 26, 2026
Is the product sketchy or just their practices from your point of view?
I think a valid view (not saying it's right) of this is: "some dorks in a country I don't inhabit gave away valuable code. I'm going to use it and I don't particularly care about what they think about it"
How much do you care about Chinese law? does that make you sketchy?
dspillett•Aug 26, 2026
Yes openly breaking Chinese law in a manner that is in breach of international convention or otherwise has wider consequences (breaking rules about keeping information from the party doesn't count unless I'm there: our privacy laws override) would make us sketchy. Can you name a company that has done that, or are you pulling an idea out of your hat because your argument otherwise lacks supporting facts/evidence?
What makes them particularly sketchy is the hypocracy: they fully understand the concept of IP and they are using/abusing it to try defend their semi-walled garden.
ChuckMcM•Aug 26, 2026
Inevitably the situation is the "sketch" here is that the vendor avoids a cost by creatively interpreting the requirements. It became famously difficult to buy a reliable PC power supply at one point because PSU vendors were all trying to cut costs and undercut each other. When there isn't a lot of market differentiation features, people differentiate on price. At NetApp we got more and more prescriptive in our contracts with motherboard OEMs because they would do silly things like "leave off 1/2 the bypass capacitors" which would then cause the filer to fail in some environments. And I get that "its just business"
It's an easy thing to avoid the costs associated with complying with FOSS licenses because they FOSS people don't come after you. So instead of having a person on staff who is making sure the company is compliant and updating the web site with source as it changes etc etc. You just don't do any of that and not only do you save money not paying that person you don't have to bother the web site people every time you do a software update. So from a manufacturer's perspective it's a win.
That said, Chinese vendors selling to Chinese customers following Chinese law. All good. Chinese vendors selling to US customers and not following US law, that's bad. I don't see how Chinese law would be part of that discussion.
ChickeNES•Aug 26, 2026
What community? It's a tool.
NegativeK•Aug 27, 2026
You can't really spit in the hobby 3d printing world without hitting the community. I have coworkers who talk about their printers, filament choice, what they've printed recently, etc etc. I've been around hackerspaces with that behavior for over a decade, but it spontaneously showed up at work from a shared interest.
That community is where open source tech tends to come from.
ChickeNES•Aug 27, 2026
I know the community well, I was challenging the assertion this hurts the community. On the contrary, better and cheaper printers help the community way more than the worries over software licensing. The average person doesn't care, they want a printer that works and doesn't cost much.
throwaway219450•Aug 26, 2026
It's not worth engaging in the debate. People have complained that Prusa printers are expensive since forever, even when the MK3 was objectively superior to the alternative models. They would rather buy a $200 Ender and spend a lifetime tinkering with it.
I think it's a bit iffy to argue that the bootloader code is covered by the GPLv3. In programs for standard computers running a big OS, the distinction lies in whether you are linking a library into your program. If the GPL code isn't a library but an external program, it isn't linking, and OK by the GPL. Now on to the bootloader code: in order to flash your device you have to put everything into a single image file. I guess the claim is that this process constitutes linking. But I don't think that is how most people think. Some possible arguments:
When linking, symbols pointing to addresses are involved. The main program calls functions in the library, and you end up with a whole program. On the other hand, a bootloader just does its thing and then jumps to a fixed address in the main program. The main program doesn't call anything in the bootloader. (Note, the Linux kernel has a special clause that explicitly allows the userland to programmatically interface with the kernel.)
I realize this sort of depends on the microcontroller toolchain. I'm familiar with a few, but not much with STM32 stuff. If the toolchain is dumb and implements the bootloader in a way that resembles linking, i.e. making it possible to resolve all the symbols in the bootloader from the main program then it could very well make the bootloader subject to the GPL.
Dylan16807•Aug 27, 2026
Even as far as linking goes... If you're not actually deriving from the code in a copyright sense then the GPL is limited in what it can demand. The advice from the FSF on linking is not exactly unbiased. The part about the intimacy of the communication between pieces of code seems a lot more solidly based in copyright law.
trinsic2•Aug 26, 2026
This is exactly what people engaged in surveillance capitalism is trying to achieve. Sell hardware/software at a loss, push out the competition that does things legitimately and then continue there engagement in profiling everyone for profit.
I did a presentation[0] on this about a month back. If we want these situations to stop we need to work to inform the public and work towards getting people that care in positions of power.
Some people like to use tools to make something possible/easy. Others like the tools themselves.
The Bambu printers, at the time of their release, were an incredibly superior pieces of hardware and software that was priced very very well and, this was a really big deal, worked fully right out of the box.
It was a pretty clear choice in either dicking around with the tools, or actually using the tool to make things. They caused a huge shift in the industry because it was silly to NOT buy a Bambu, if you wanted to actually make things.
I love open source software, but I also know that a team of focused, dedicated, high skill, engineers, who are financially motivated with big paychecks, to do well, will often do a better job making something proprietary than a bunch of volunteers doing it for fun, on the weekends. Ffs, we didn't get a half ass implementation (thanks to shite 8 bit boards everyone was using) of motion/vibration compensation in all the open source firmwares, a tech from the 1960's, until right before Bambu's release. It's still not available in most. Pressure compensation was still relatively new.
Symbiote•Aug 26, 2026
Prusa's printers also worked out of the box. They cost slightly more, and their staff aren't volunteers.
dspillett•Aug 26, 2026
More than slightly more, certainly when comparing like-for-like, particularly when considering multi-material features.
ChickeNES•Aug 26, 2026
It's a worse printer too. Not to mention overpriced since it's built in the EU
gilfaethwy•Aug 26, 2026
> overpriced since it's built in the EU
Externalized costs are real. "Overpriced because it's built in the EU" implicitly argues that there are no fundamental differences between the labor conditions, environmental controls, and societal impact of the production process.
ChickeNES•Aug 26, 2026
Yes, those do not concern me. I already buy plenty of stuff from China, so a 3D printer is no different, why would I make an exception?
fn-mote•Aug 27, 2026
I am confident that my job cannot be outsourced to China, but I still worry a lot about outsourcing everything else in my life.
I recognize that my neighbors could easily lose their jobs to the same forces that are causing me to buy a Bambu printer.
nomel•Aug 26, 2026
No they did not. Calibrating flow and pressure advance was entirely manual. Vibration compensation/input shaping did not exist until 2023 [1], and was also entirely manual. The Pursa XL (only thing remotely comparable) was over double the price [2], with the Core One (Bambu competitor) not coming out until 2024 [2]. Their MMU was a clusterfuck of tinkering [4], so when Bambu released the AMS, people were trying to figure out ways to get it to work on the Prusa! Even now, the new Prusa MMU alone is almost as much as a Bambu + AMS!.
Bambu shook the industry because it was better in all ways that mattered if you actually wanted to make something.
if you absolutely needed a huge multi color/material printer, sure, but a prusa i3 mkwhatever was entirely adequate for normal 3d printing out of the box
nomel•Aug 27, 2026
Nope. You will get absolute shite prints if you skip the manual, eyeballed, first layer cals [1]. Bambu manual effort is a few seconds [2] of navigating a menu, then print. But, these cal's are NOT equivalent, with Bambu doing linear advance cal and input shaping (completely manual on i3).
Prusa being "adequate" (and expensive) is partly why Bambu now has 41% of the market, while Prusa has < 3% [3].
I have a Prusa i3 Mk3 and a Bambu P1S and I have to disagree. They are in entirely different leagues. The Prusa was a step change improvement from an Ender 3, and the Bambu is a step change from the Prusa i3 Mk3. It definitely depends on what you're printing, but I personally saw all my print failures on the Prusa pretty much go away overnight with Bambu.
mrheosuper•Aug 27, 2026
>slightly more
I wouldn't say "50%" is slightly more.
mrheosuper•Aug 27, 2026
I blame the other 3d printer makers: Anycubic, Ender, Creality, etc.
Bambulab is far from the first player enter the market, or even the "budget" segment, but they still somehow captured it. Only till recently the others begin offering something that can compete with bambu's machine.
Turn out the demand for a good 3d printer, that you only need to do very basic tuning, and does not break your bank account, is very high. Who could've guessed ?
mschuster91•Aug 26, 2026
> A 3D-printing user from Poland, Paweł Jarczak, reverse-engineered the User-Agent string and network code, which resulted in a DMCA takedown notice from Bambu Lab. "GitHub, of course, honored it, because Microsoft."
Which is somewhat funny because a lot of high-impact piracy stuff is on Github and has been for years. GenP (Adobe) and Massgrave MAS (anything Microsoft) come to my mind.
ipdashc•Aug 26, 2026
> GenP (Adobe) and Massgrave MAS (anything Microsoft)
It's questionable whether those two companies care that much about piracy, they make most of their money off enterprise, right? For a while I heard it theorized that Adobe and Microsoft largely let people get away with it, since it still keeps them in the ecosystem and therefore makes them likelier to use those products at work. Versus Bambu which probably still sells mainly to random hobbyists/home users
dspillett•Aug 26, 2026
> I heard it theorized that … Microsoft largely let people get away with it, since it still keeps them in the ecosystem
That is more than just a theory, their own documents (I can't remember if they were leaked or officially released as part of the big anti-trust case) stated that this was essentially their policy for poor eastern counties: if they wouldn't be paying for it anyway MS preferred them to use it rather than something else (like Linux, or something locally created, etc,).
It was less openly ignored in the case of students, or people using work licenses (or just pirate copies) at home, but the above and the lack of enforcement would indicate it was ignored for that reason.
dofm•Aug 26, 2026
At this point there are so many alternatives that we should fully be into the “friends don’t let friends buy Bambu Labs products” but alas we are not.
It’s absolutely insane how little they would have to do to be good community members and choose not to.
herbst•Aug 26, 2026
I am not sure if that is actually the case. Everyone I know with anything else than a bambu still has regular maintenance, constant adjustment and failures. Bambu just works. Sure prusa are cool too, but much more expensive and still more maintenance.
I honestly don't want another maintenance hobby. I just want something that works and doesn't cost an arm and a leg.
WillPostForFood•Aug 26, 2026
In defense of Prusa, I’ve had mine for six years and have done basically zero maintenance. I’ve adjusted temps a few times when switching filament brands, and that’s about it.
You are right to say Prusa is more of a hobbyist machine while Bambu is closer to a consumer appliance. But within the hobbyist spectrum Prusa is more on the light hobby side these days. My first printer was a Printrbot where I was hand-entering G-code to move the nozzle around and level the bed. Prusa is a dream compared to that.
I like Prusa as a company (and the guy), and I like the community around it. The machine is simple, keeps working, parts are available, and you can understand and repair it if you need to.
dofm•Aug 26, 2026
Prusa make machine tools, IMO.
(I don't understand people who build print farms from Bambu Lab machines at all; I do get using Prusas.)
herbst•Aug 26, 2026
If I would have read more into it before buying a Bambu I would probably own a prusa too, also I get where you are coming from, my $300 ender was a years long pain with >$800 in upgrades and replacements and barely show worthy prints.
However I've seen so many non technical people having fun with 3d printers at a pure hobby level at this point it's hard to not recommend Bambu in some way.
eknkc•Aug 26, 2026
Which alternatives?
dofm•Aug 26, 2026
Depends on the niche and application you are interested in.
Though I would caveat my assertion by saying that if the specific form factor of the A1 Mini (which is a nice thing) matters to you, and it well might, there’s probably no alternative for that single machine, to be fair.
But I would still choose something else.
Personally I think the “just works” 3D printer is largely the result of cognitive bias. It’s a machine tool that melts plastic: I don’t think this is the appropriate territory for “just works”. But that’s just me.
m4rtink•Aug 26, 2026
Yeah - we have 4 printers at the moment, one of them a Prusa MK3S+ & it has been maintenance free so far.
The other printers are basically custom designs by this point & you need to fix things sometimes - like recently erosion of the filament eationg away enough of the idler arm to slip from the forwarding wheel. But I don't mind, because I can easily fix all of that with either 3D printed bits or easily & cheaply available common parts.
I don't mind because I know I can fix ynathing on those printers! No issues like with 2D printers with closed firmware that worksa against you to print secret dots, only accepts locked down blessed overpriced consumables & fails to print if only one color runs low. Not to mention the bloody thing is basically unfixable & any drivers already suck + they will drop support on a whim anyway.
Seriously, would rather fix the 3D printer after every print than to deal with the level of bulshit common on 2D printers - and ot seems to me that Bambu is trying to achieve exactly that!
ChickeNES•Aug 26, 2026
> Seriously, would rather fix the 3D printer after every print than to deal with the level of bulshit common on 2D printers - and ot seems to me that Bambu is trying to achieve exactly that!
This is why hobby printers continue to be a time sink, while my Bambu just works. It's a tool, I shouldn't have to fix it after each use.
dofm•Aug 26, 2026
But it's a machine tool and you should be able to modify and improve it. Bambu don't want you to have that flexibility. And when they do break in unusual ways (and they still do), their customer service is not good enough to match their consumer market.
My current machine is a bit of a weirdo. A formerly basic Creality Ender 2 Pro (the cheapest possible small bed model) that I have had for more than four years, which has always been an unusually excellent machine for fine work, and now has a hardened steel nozzle in a faster heating/higher temperature hotend, mesh bed levelling, direct drive extruder, tidier cables (!), Klipper/KlipperScreen, and an even tighter calibration situation.
I am not at all bothered about pushing machine limits, and I am not an electronics or hardware tinkerer at all. Not my mindset. I don't print stuff for the sake of printing, and I'm much more focussed on learning CAD techniques.
The upgrades were done as a systematic plan to teach myself how the basic functions of a typical modern machine work on a much deeper level, so I can teach and help others. (Life plan changes)
And indeed only once I knew I have need of a larger machine anyway — not that I've bought it yet, for life reasons.
It's nice that it's a little faster, prints higher temperature materials better, levels more easily and more precisely, is now super dimensionally accurate, and my modestly-custom Klipper config has let me dabble with support interface layer swaps by smoothing over some of the details of filament changes, which is cool. In many ways it is like having a newer machine.
I still don't feel like a hardware or electronics guy and I'm not a performance tinkerer. The machine is upgraded, prints superbly, and now I just use it when I need to use it.
But what I have internalised is that I should be able to run my printer as long as I want, with what software I want, understand it and fix it if I need to. I absolutely don't want to tinker for the sake of it, but I also don't want to cross fingers and rely on a machine being great from the factory. If fixing it means changing it, that's fine with me.
If you are intending to print things for which quality and precision matters, then there is no substitute for understanding the machine more deeply, and that means a machine that will let you understand it.
This new understanding is really challenging my choice of what I buy for my workshop, because to some extent this window of deeper understanding is closing. There are, by contrast, many "off the shelf" machines that compete with (and outperform) Bambu machines at comparable and lower prices.
ChickeNES•Aug 26, 2026
See, my thing is that I am a electronics and hardware tinkerer, and the printer(s) were taking up time I could have been actually tinkering with projects instead of my tools. My X1C still behaves the same as when I bought it, and Bambu continues to sell all the replacement parts needed.
dofm•Aug 26, 2026
Interesting.
I come at this from the other direction. I was your stereotypical guitar-playing, photographer, software nerd; I would never have tried making physical things until I realised I wanted to make photography accessories.
(Also some of my experience with expensive machines has been very spendy inkjet printers.)
But I also want to teach (adults) and I have therefore developed a tendency to teach myself anything I am interested in at enough of a level that I could teach someone newer to it.
There are just too many sketchy things around Bambu for me to take them seriously.
I will concede I am using a budget Creality, and that almost none of the alternative players have the strongest reputation for open source ethics, so it is a narrowed field.
But I can see myself buying a Snapmaker, a Prusa, or a Sovol, on the budget fringes the newer Flashforge printers are shockingly good, and for the entry level I don't massively mind what Anycubic are doing with the Kobra X; it's not heavy duty but potentially has some applications.
I don't think I'd buy a Creality again. But it's in no way because of my experience with them or with the machine I bought or its upgrades; this experience has been in very significant ways a life-changing one.
I just don't think they appear to be better at doing the more closed products than they were at the dirt cheap stuff (industry-changing machines for which they catch undue shit), and they turn over new products too fast.
Where I am more challenged is CNC.
I definitely don't know how I feel here, because on the one hand I'd like a large-ish MPCNC or scrappy eBay CNC to rough out lap steel guitars and conversion necks; big coarse-ish-but-accurate woodcutting I am bad at by hand. And on the other hand, for the photography stuff in particular, I have definite applications for a Carvera Z1.
I guess the answer may be to do both. But the same process of assessment will be involved in this case.
amazingamazing•Aug 26, 2026
In the AI age do such things matter? I am surprised they have not reimplemented at this point.
dspillett•Aug 26, 2026
You mean doing an AI based "clean room" reimplenentation? IIRC the jury is still out on the validity of that technique (though I expect it will turn out that the practise is not actionable as other similar decisions have gone that way), but even if that is deemed perfectly legal and would get them out of the requirement for future releases, they should still release the code for the versions that are subject to the license.
herbst•Aug 26, 2026
I never used Windows, I never used Apple, I never used Adobe, I made my life harder than I needed to for my ideals...
Now I am old and have enough hobbies and want things that just work.
Got an iPad, and honestly most apps actually suck and cost monthly subscriptions plus app price, got a windows PC for music and it's horrible and full of ads.
But these 3d printers actually just work.
From a customer standpoint I can't blame them, it's sad that they can't be at least a little less evil
m4rtink•Aug 26, 2026
Any reason why you did not choose a PRusa 3D printer ? From my experience those work well, are mucxh more open & don't do any of the stupid shit Bambu is trying to pull off.
herbst•Aug 26, 2026
Replacing my old ender with something that actually works was a relatively spontaneous thing for me. And as it's purely a hobby I looked for something price sensible but with multicolor support that I don't have to thinker with anymore.
Not sure if Bambu was already hated back then for stuff like this. At least not that much, it just wasn't super open sure.
At this point I get a new printer for free every few months because of makerworld and their weird point system, so until I actually do any business with it I have no real reason to change my platform right now.
mc3301•Aug 27, 2026
A new printer for free every few months because of their weird point system?
How does that work?
daringrain32781•Aug 26, 2026
For me, price. Bambu's offerings are a fraction of what Prusa charges.
MBCook•Aug 27, 2026
Now you know part of why.
xavdid•Aug 27, 2026
I traded a Prusa MK3S for a secondhand Bambu P1S and it was night and day. I believe the prusa could have gotten to a place where it printed well and consistently, but the P1S *just works*. It printed better out of the gate with 0 tinkering than the Prusa did after I had spent hours calibrating, testing, and re-calibrating it.
I wanted the Prusa to be just as good, which is why I started with it. I wanted to support the open ecosystem, but not at the expense of not getting to do what I actually set out to (print things nicely). It's a shame! Maybe I was holding it wrong (but again, with the Bambu, I didn't have to worry about it).
hrpnk•Aug 26, 2026
What would the company need to do to comply with licensing?
Release the studio, shared library, and server-side components as AGPL?
dspillett•Aug 26, 2026
Perhaps not the server-side components, unless they directly link AGPL covered code there too. No one that I've seen seems to be asking for the server side parts, just the client parts so they can use the printers locally they way they want without hacking around.
Studio is fully release IIRC, it is that "external" part which is the issue.
The linkage between that and the client should be soft enough otherwise for the server side not to inherit the responsibilities of the client. Though if part of their claims attempting to defend their current position suggest that linkage is more direct, then they are taking aim at their own foot somewhat.
dwaite•Aug 26, 2026
They also put in anti-reverse-engineering code in Studio, which I believe is also an AGPL violation.
Mohamed_Mansour•Aug 26, 2026
Which is better parrot or kali Linux? I think it's parrot
jonhohle•Aug 26, 2026
> At the same time, a parallel market in 3D printers for manufacturing was developing. These were printers that took up a whole room and cost hundreds of thousands of dollars.
Machines that take up rooms and cost hundreds of thousands of dollars existed a decade or more (probably 20 years, if I had to guess; patents) before hobby printers. I’ve not seen one retail printer that wasn’t based on the tech from giant commercial printers. And there is definitely tech in giant commercial printers that will never be retailized (laminated object manufacturing).
tamimio•Aug 26, 2026
I wasn’t following bambu-drama, what’s a good alternative that have equal good quality/precision and won’t require taking a loan to buy?
VorpalWay•Aug 26, 2026
Prusa is good, a bit more expensive (since it is made in EU), but I wouldn't say it is "needs a loan" more expensive (of course depending on what model, they have small scale industrial offerings too).
I understand Snapmaker has been getting some good press lately (especially the Snapmaker U1), and it would be cheaper than the equivalent Prusa and they are more open than Bambu (so far) in their deals with open source.
My only personal experience is with Prusa (and I'm a happy customer). Their machines are also built to be serviable, which matters for print farm style usage, I have heard that a Bambu just doesn't last more than a year or two in that environment. Prusas just keep going as long as you lube the bearings every now and then.
happyopossum•Aug 26, 2026
> a bit more expensive
$750 vs $1,750 is not a bit more...
[0] P2S with AMS vs Core One + MMU
knowaveragejoe•Aug 27, 2026
The A1s/As minis are dead cheap. I don't know if you'll find anything much better for a competitive price, frankly.
chews•Aug 26, 2026
It's an open mqtt server if you have creds..... 300 lines of python made by claude totally power mine over a raspberry pi zero.... yes, it sucks they stole, but their hardware is fantastic and if good artist's copy, great artist's steal.
fn-mote•Aug 27, 2026
> if good artists copy, great artists steal
This would be a lot more convincing if the stolen part were the great part, as happens in music.
ThouYS•Aug 26, 2026
copyright etc has been dead the moment the personal computer arrived. we are still living through the chaos of the new world being born, but I think it has been over for a while already.
I would be very surprised if any kind of license like the GPL (or any license for published code) is left in 100 years or so.
DRM is another face of the same struggle, and this too shall pass. Ironically, DRM coming from the same source as the GPL (wanting to force rules onto something freely copyable), is viewed very harshly, since it supposedly interferes with your "freedom". But in the end they are the same.
Both GPL and DRM come from the idealistic fantasy that non-scarce digital goods have any (market) value at all. AI is just the latest nail in this coffin.
Yohvee7u•Aug 26, 2026
That's the whole point and philosophy behind the GPL. That's why it's called "copyleft". It's about taking copyright law as it currently exists and using it subversively.
Dylan16807•Aug 27, 2026
That subversion is key to GPL but it's not the point. The point is to get the code shared as widely as possible.
The person you're talking to is missing that point because they're starting at "freely copyable", while the actual default is that code is never published at all. GPL is compromise to push source code 90% of the way to "freely copyable" because the alternative is usually 0% copyable.
calvinmorrison•Aug 27, 2026
Chinese dont care about your american notions of copyright
pocksuppet•Aug 27, 2026
Nobody cares unless there's a lawsuit. You can violate AGPL, or any other license, with impunity if the copyright owner doesn't sue you.
like_any_other•Aug 27, 2026
If the GPL [1] got the same government support as trademark law [2], this violation would not be "ongoing". Why doesn't it? Nominally, the law protects both equally.
[1] I won't say "copyright", because if this was about pirated Marvel movies, it absolutely would be getting the same treatment.
27 Comments
Or they can pay statutory maximum copyright violations of $120000 per copy violated.
Per copy.
Any import block would be on the hardware, not the software. And the software would need to be released for other territories anyway.
If you go on social media where people are talking about 3D printing, a lot of folks are not developers and don't know anything about software licensing. It is hard to explain this problem to them, or why anyone should care. Meanwhile for many of these people, Bambu is totally synonymous with 3D printing.
Prusa has attracted its own valid criticisms, but I think they are closer to being right on these issues. They can't compete with Bambu on price.
While the ecosystem was open few people cared about the network plugin, and apart from that plugin the Bambu Studio slicer is open source. Similarly there was little interest in calling out the suspected violation of their online slicer - it's probably just a headless variant of Bambu Studio. But when Bambu started closing their ecosystem and claiming that user agent headers are DRM everyone got justifiably upset, and this is a just outlet for that
I'm not a lawyer, but my understanding of the GPL is it's meant to block this kind of behavior. Certainly it's against the spirit of it.
But IIRC the plugin itself contains code covered by the open source licenses, either that or being directly linked the way it is is considered sufficient for the requirements of the license to apply.
But Prusa is only engaged in self-harm.
I wish I could talk better about them, but what a let down. I really hope someone really figures out how to put the screws to them over this GPL violation.
Not to be too glib here, but its one of the paradoxes of "free software" which is there isn't any money generated by the licenses that keep it free. Where as "licensed" software has a revenue stream that is used to enforce the license against people who fail to honor it. The FSF can only do so much with their budget here.
There's a confusing part of the article where he says that what he believes is a violation is something that a judge isn't going to care about. I don't know if he's implying that the judges aren't capable of interpreting the AGPL properly, or if he's admitting that the legal argument isn't as solid as they thought it was when they started. It's a confusing thing to say next to the broad claims about violations.
And the saddest thing is that Bambu knows this. They know that people who give away software are not a serious threat to them. And it is especially galling that the value they have extracted out of that software will pay the lawyers that keep you from preventing them from continuing to extract that value and keep it for themselves.
[1] "Media reports have also indicated that Bambu Lab has shipped more than 1.2 million units, claiming a 29% global share." -- https://kr-asia.com/bambu-lab-nears-usd-100-billion-valuatio...
It is for the UK but no doubt m'learned friends in the US can command even higher fees.
Try grabbing a KC for five days, civil/commercial with all the trimmings. That will set you back £105,000.
Obviously the impoverished KC won't pocket all that lolly. There is VAT to pay and staff costs and stuff.
A KC is one of these: https://kcappointments.org/ for obvious reasons they used to known as QCs
Court fees, fees for accessing case law, experts, paralegals, etc.
You pay the lawyer and a big portion of that goes towards his costs for additional labour and everything else. A lawyer grossing $2m/year isn't bringing home anything close to that.
That said $250k for a single lawyer for 6 weeks seems high.
IMHO that kind of stuff would have to go through the WTO but unfortunately Trump gutted that one already way back in his first term.
https://www.cato.org/blog/biden-administration-continues-be-...
But is there anything to stop reverse engineering the physical printer itself, improving on it by 10mm build volume in each direction, and releasing that?
It won't be a copy of the Bambu printer AND it can run the same software, truly freely.
There is no way to stop it beyond getting CBP to block imports, which effectively amounts to shunning.
Unfortunately that seems to increasingly be the status quo these days, look at US companies and their attitude to IP when it suits them to ignore licenses for LLM training purposes.
The US does not respect the EU's Protected Designation of Origin laws because they have more to gain by ignoring them. China has more to gain by ignoring US IP laws.
People want to pretend LLM vector search compaction output isn't copyright and trademark violation. We are in the Napster phase of the market exploitation.
On a positive note there is nothing left of value to steal/scrape, so the problem will likely eventually be self-correcting. =3
This seems to be the main complaint: They ship a separate .so as a plugin.
Saying that an actual judge is not going to care about it is confusing. Is this or is it not consistent with the license? Why wouldn't a judge care about something that is a license violation? I don't get it.
> violating GPLv2 by not providing the source for a Buildroot-based Linux (and other copyleft components) used in the firmware of some 3D-printer models. He downloaded the 300MB firmware image from the Bambu Lab web site, but was unable to find the source or an offer to provide it.
This was the first hit when I googled it: https://wiki.bambulab.com/en/knowledge-sharing/open-source-s.... Includes the e-mail address opensource@bambulab.com for requests
Is there some other technicality that I'm missing?
> Bambu Lab needed a slicer, of course, so it started shipping a modified PrusaSlicer (as Bambu Studio), which it was able to get via the AGPLv3, but without shipping any source code or an offer to provide it. That continued up through 2022 or 2023, Kühn said, until the pressure from the 3D-printing community effectively forced Bambu Lab to make a source release, which was, as is almost always the case for a first release, not the actual corresponding source code.
I googled Bambu's first Kickstarter. It shows July 2022 as the estimated ship date.
The BambuStudio repo has public issues from July 2022 with public user comments - https://github.com/bambulab/BambuStudio/issues/12
So the repo was public and available around the time that the Kickstarter ended. Seems fair? He acts like they were refusing until the community forced them to do it a year later, but the repo was live and open when the printers shipped.
I get that Bambu is supposed to be the enemy and we're not supposed to defend the enemy unless we want a lot of downvotes, but the reporting on this issue seems lacking any fact checking. I didn't try very hard but found contradictory evidence in the first Google link for several of the claims. The article is quoting someone speaking from memory to an audience so mistakes are understandable, but I would at minimum expect some cursory fact checking for someone reporting on it.
* 2022-05-29: Admitted it's based on PrusaSlicer [https://blog.bambulab.com/to-open-or-not-to-open-that-is-the...](https://blog.bambulab.com/to-open-or-not-to-open-that-is-the...) * "We would like to ask for the understanding of the community to give us some time *before we open-source* Parts 1 and 2, which is scheduled for the second half of this year." - admitted it's currently an AGPL violation
* 2022-06-29: Evidence. "GPL requires release of source the moment binaries are out. Many people have had the binaries for weeks. They are 100% in violation". [https://x.com/DreadMakerAdam/status/1542216014984876036](https://x.com/DreadMakerAdam/status/1542216014984876036)
* ???
* 2022-07-15: They only dumped it (with prior git history squashed) onto GitHub months after the initial release, after immense community pressure. [https://www.reddit.com/r/OpenBambu/comments/1thfslw/comment/...](https://www.reddit.com/r/OpenBambu/comments/1thfslw/comment/...) [https://github.com/bambulab/BambuStudio/issues/1](https://github.com/bambulab/BambuStudio/issues/1)
Software and services aren’t the same, and the anticapitalist zealots at the FSF can’t square this circle no matter how hard they try.
I do believe that the GPL will eventually be broken. However, it won't be broken in ways such as happening now. It'll be broken when some company is able to show the court that they were doing a lot of things to ensure they weren't going to violate the GPL. And yet a rogue employee, unknown to the rest of the company, violated it despite being told not to. I don't know exactly what the courts will decide in this case. It's still going to come down to the copyright violation. However, it likely won't be a source code release. The GPL will hold up, they will just say the written requirements are to much and ??? . But again, this will only happen after the courts take a very detailed look at all the things the company is doing to ensure they didn't violate the GPL in the first place, which means we are likely looking at many, many years before the first such case. Anyone who isn't aware of the GPL and taking a lot of active effort to ensure they're not violating it, they won't be able to pull off this defense after the fact.
I would expect a court to compell a defendant to either comply with the license or cease distribution and possibly pay damages for unauthorized distribution... But I don't know that there's a good way to figure the damages and US statuatory damages likely don't apply because who registers their copyrights for open source code (or deposits copies with the Library of Congress)?
Infringement by a rouge employee, acting against policy, may be reason to limit punitve damages and stick to actual damages... But if it's an actual rogue employee acting against policy, I would expect the company to cease infringement, begin compliance, or negotiate for an alternative solution once notified about the issue anyway.
I have verified that my P2S in LAN mode never attempts to make external connections at all (blocked it anyway, of course) and OrcaSlicer + this plugin never attempts to connect to any of Bambu's servers.
My P2S is easily the best printer I've ever had, they really do make incredible machines, it's a shame they have created this ridiculous situation just to (as far as I can tell) collect telemetry.
It's excellent for monitoring and setting up automations around printer events, I use it all the time too.
https://github.com/linuxserver/docker-orcaslicer
https://bambuddy.cool/
Speed is not why I set my printer up this way though. I live in a state that may ban 3D printers unless they include invasive surveillance, so I wanted to get a high end pre-ban printer in case that becomes law.
https://www.eff.org/deeplinks/2026/06/we-can-still-stop-cali...
I bought a P2S, and then literally a few days later, the X2D came out. Thanks Microcenter, and your excellent customer service and return policy. The X2D is everything the P2S is, but with another nozzle.
Option B: cloud mode without Developer Mode
Starting with v2.0.0 the plugin can also drive a cloud-paired printer with verification left ON — no Developer Mode. This keeps the cloud features (cloud print dispatch, print history, MakerWorld) but is meant for advanced users, because it requires private slicer credentials that this project does not distribute.
Two things are needed:
1. Bambu's slicer credentials, which you provide yourself. Put slicer_cert.pem, slicer_key.pem and slicer_crl.pem in the plugin's config directory (or point at them with slicer_cert_pem / slicer_key_pem / slicer_crl_pem in obn.conf). The plugin uses the key to sign MQTT print commands and to install its app certificate on the printer. These are private credentials. This project does not ship them and gives no instructions on obtaining them — you have to find or extract them yourself, and you alone are responsible for ensuring your use complies with the applicable terms and law.
2. Two settings in obn.conf. Set block_cloud = 0 (the default 1 blocks cloud printing outright) and client_name = BambuStudio (the honest default client name is rejected by the cloud print API with HTTP 403).
With that in place you get signed MQTT commands, on-printer app-certificate install, cloud print dispatch, print history and MakerWorld — without touching Developer Mode.
What the default cloud_print = cloud_only actually uploads. Even in this mode the model itself normally stays on your network: for a print with a cloud record the plugin sends the .3mf straight to the printer over LAN FTPS, and only the record goes to Bambu — a project entry, a task entry (mode=lan_file) and a small config .3mf that print history uses for its thumbnails. That record is exactly what buys you the cloud extras: print history in Studio and Handy, and the ability to rate models on MakerWorld. The full model is uploaded to Bambu's servers only when Studio dispatches a pure cloud print (start_print), e.g. for a printer that is not reachable on your LAN.
You can limit even that: set cloud_print = try_lan_first or lan_only to print over the LAN without writing a cloud record at all, and cloud_hide_history = 1 to hide the cloud print history in Studio.
If you run neither Developer Mode nor valid credentials, the printer rejects every print / project_file command and shows on its screen:
MQTT Command verification failed err_code: 84033543
If you want to feed all your print activity to Bambu's servers anyway, why bother using an open source plugin in the first place?
Without the networking plugin you cannot monitor your printer or send prints to it remotely. You can copy files to a flash drive and print that way.
If your response is "Let's force TPP-style international trade courts to force AGPL compliance", well, you're the globalist that Bernie Sanders rightfully warned about and people like trump pretended/lied about being against as justification for why they get elected. I hope you never get what you want. The same crap will be used to patent surgical procedures and other IP in ways that are horrible for society.
You want to do fake software viral communism that's incompatible with how the legal system operates? You're poor as shit and can't hire good lawyers vs business because capitalism isn't favorable to you? That's why you're supposed to engineer something better than crapitalism. This is a grand challenge for the FOSS movement and why I am still broadly supportive of the reasons why someone like RMS votes/voted for the green party (and yes I know they are these days loony/crazy/compromised by the FSB)
Real FOSS is MIT. Learn to make your fake viral communist license have teeth or forever persist in this doomed world you have created.
That is not what people are asking for.
It is selfish and short sighted, and it leaves their future impoverished, but in the moment they "got a good deal."
I think a valid view (not saying it's right) of this is: "some dorks in a country I don't inhabit gave away valuable code. I'm going to use it and I don't particularly care about what they think about it"
How much do you care about Chinese law? does that make you sketchy?
What makes them particularly sketchy is the hypocracy: they fully understand the concept of IP and they are using/abusing it to try defend their semi-walled garden.
It's an easy thing to avoid the costs associated with complying with FOSS licenses because they FOSS people don't come after you. So instead of having a person on staff who is making sure the company is compliant and updating the web site with source as it changes etc etc. You just don't do any of that and not only do you save money not paying that person you don't have to bother the web site people every time you do a software update. So from a manufacturer's perspective it's a win.
That said, Chinese vendors selling to Chinese customers following Chinese law. All good. Chinese vendors selling to US customers and not following US law, that's bad. I don't see how Chinese law would be part of that discussion.
That community is where open source tech tends to come from.
When linking, symbols pointing to addresses are involved. The main program calls functions in the library, and you end up with a whole program. On the other hand, a bootloader just does its thing and then jumps to a fixed address in the main program. The main program doesn't call anything in the bootloader. (Note, the Linux kernel has a special clause that explicitly allows the userland to programmatically interface with the kernel.)
I realize this sort of depends on the microcontroller toolchain. I'm familiar with a few, but not much with STM32 stuff. If the toolchain is dumb and implements the bootloader in a way that resembles linking, i.e. making it possible to resolve all the symbols in the bootloader from the main program then it could very well make the bootloader subject to the GPL.
I did a presentation[0] on this about a month back. If we want these situations to stop we need to work to inform the public and work towards getting people that care in positions of power.
[0]: https://www.scottrlarson.com/presentations/overcoming-survei...
The Bambu printers, at the time of their release, were an incredibly superior pieces of hardware and software that was priced very very well and, this was a really big deal, worked fully right out of the box.
It was a pretty clear choice in either dicking around with the tools, or actually using the tool to make things. They caused a huge shift in the industry because it was silly to NOT buy a Bambu, if you wanted to actually make things.
I love open source software, but I also know that a team of focused, dedicated, high skill, engineers, who are financially motivated with big paychecks, to do well, will often do a better job making something proprietary than a bunch of volunteers doing it for fun, on the weekends. Ffs, we didn't get a half ass implementation (thanks to shite 8 bit boards everyone was using) of motion/vibration compensation in all the open source firmwares, a tech from the 1960's, until right before Bambu's release. It's still not available in most. Pressure compensation was still relatively new.
Externalized costs are real. "Overpriced because it's built in the EU" implicitly argues that there are no fundamental differences between the labor conditions, environmental controls, and societal impact of the production process.
I recognize that my neighbors could easily lose their jobs to the same forces that are causing me to buy a Bambu printer.
Bambu shook the industry because it was better in all ways that mattered if you actually wanted to make something.
[1] https://www.fabbaloo.com/news/prusa-research-unveils-mk4-inp...
[2] https://www.3docity.com.au/blogs/3dprinting/corexy-printers-...
[3] https://toms3d.org/2025/02/11/finally-prusa-takes-on-bambu-c...
[4] https://www.reddit.com/r/prusa3d/comments/x3m76q/did_you_reg...
Prusa being "adequate" (and expensive) is partly why Bambu now has 41% of the market, while Prusa has < 3% [3].
[1] https://youtu.be/GE-lrRbU124&t=245 and https://youtu.be/GE-lrRbU124&t=524
[2] https://www.youtube.com/shorts/XruRPpODE6Q.
[3] https://www.3dprintingjournal.com/p/consolidation-has-become...
I have a Prusa btw.
I wouldn't say "50%" is slightly more.
Bambulab is far from the first player enter the market, or even the "budget" segment, but they still somehow captured it. Only till recently the others begin offering something that can compete with bambu's machine.
Turn out the demand for a good 3d printer, that you only need to do very basic tuning, and does not break your bank account, is very high. Who could've guessed ?
Which is somewhat funny because a lot of high-impact piracy stuff is on Github and has been for years. GenP (Adobe) and Massgrave MAS (anything Microsoft) come to my mind.
It's questionable whether those two companies care that much about piracy, they make most of their money off enterprise, right? For a while I heard it theorized that Adobe and Microsoft largely let people get away with it, since it still keeps them in the ecosystem and therefore makes them likelier to use those products at work. Versus Bambu which probably still sells mainly to random hobbyists/home users
That is more than just a theory, their own documents (I can't remember if they were leaked or officially released as part of the big anti-trust case) stated that this was essentially their policy for poor eastern counties: if they wouldn't be paying for it anyway MS preferred them to use it rather than something else (like Linux, or something locally created, etc,).
It was less openly ignored in the case of students, or people using work licenses (or just pirate copies) at home, but the above and the lack of enforcement would indicate it was ignored for that reason.
It’s absolutely insane how little they would have to do to be good community members and choose not to.
I honestly don't want another maintenance hobby. I just want something that works and doesn't cost an arm and a leg.
You are right to say Prusa is more of a hobbyist machine while Bambu is closer to a consumer appliance. But within the hobbyist spectrum Prusa is more on the light hobby side these days. My first printer was a Printrbot where I was hand-entering G-code to move the nozzle around and level the bed. Prusa is a dream compared to that.
I like Prusa as a company (and the guy), and I like the community around it. The machine is simple, keeps working, parts are available, and you can understand and repair it if you need to.
(I don't understand people who build print farms from Bambu Lab machines at all; I do get using Prusas.)
However I've seen so many non technical people having fun with 3d printers at a pure hobby level at this point it's hard to not recommend Bambu in some way.
Though I would caveat my assertion by saying that if the specific form factor of the A1 Mini (which is a nice thing) matters to you, and it well might, there’s probably no alternative for that single machine, to be fair.
But I would still choose something else.
Personally I think the “just works” 3D printer is largely the result of cognitive bias. It’s a machine tool that melts plastic: I don’t think this is the appropriate territory for “just works”. But that’s just me.
The other printers are basically custom designs by this point & you need to fix things sometimes - like recently erosion of the filament eationg away enough of the idler arm to slip from the forwarding wheel. But I don't mind, because I can easily fix all of that with either 3D printed bits or easily & cheaply available common parts.
I don't mind because I know I can fix ynathing on those printers! No issues like with 2D printers with closed firmware that worksa against you to print secret dots, only accepts locked down blessed overpriced consumables & fails to print if only one color runs low. Not to mention the bloody thing is basically unfixable & any drivers already suck + they will drop support on a whim anyway.
Seriously, would rather fix the 3D printer after every print than to deal with the level of bulshit common on 2D printers - and ot seems to me that Bambu is trying to achieve exactly that!
This is why hobby printers continue to be a time sink, while my Bambu just works. It's a tool, I shouldn't have to fix it after each use.
My current machine is a bit of a weirdo. A formerly basic Creality Ender 2 Pro (the cheapest possible small bed model) that I have had for more than four years, which has always been an unusually excellent machine for fine work, and now has a hardened steel nozzle in a faster heating/higher temperature hotend, mesh bed levelling, direct drive extruder, tidier cables (!), Klipper/KlipperScreen, and an even tighter calibration situation.
I am not at all bothered about pushing machine limits, and I am not an electronics or hardware tinkerer at all. Not my mindset. I don't print stuff for the sake of printing, and I'm much more focussed on learning CAD techniques.
The upgrades were done as a systematic plan to teach myself how the basic functions of a typical modern machine work on a much deeper level, so I can teach and help others. (Life plan changes)
And indeed only once I knew I have need of a larger machine anyway — not that I've bought it yet, for life reasons.
It's nice that it's a little faster, prints higher temperature materials better, levels more easily and more precisely, is now super dimensionally accurate, and my modestly-custom Klipper config has let me dabble with support interface layer swaps by smoothing over some of the details of filament changes, which is cool. In many ways it is like having a newer machine.
I still don't feel like a hardware or electronics guy and I'm not a performance tinkerer. The machine is upgraded, prints superbly, and now I just use it when I need to use it.
But what I have internalised is that I should be able to run my printer as long as I want, with what software I want, understand it and fix it if I need to. I absolutely don't want to tinker for the sake of it, but I also don't want to cross fingers and rely on a machine being great from the factory. If fixing it means changing it, that's fine with me.
If you are intending to print things for which quality and precision matters, then there is no substitute for understanding the machine more deeply, and that means a machine that will let you understand it.
This new understanding is really challenging my choice of what I buy for my workshop, because to some extent this window of deeper understanding is closing. There are, by contrast, many "off the shelf" machines that compete with (and outperform) Bambu machines at comparable and lower prices.
I come at this from the other direction. I was your stereotypical guitar-playing, photographer, software nerd; I would never have tried making physical things until I realised I wanted to make photography accessories.
(Also some of my experience with expensive machines has been very spendy inkjet printers.)
But I also want to teach (adults) and I have therefore developed a tendency to teach myself anything I am interested in at enough of a level that I could teach someone newer to it.
There are just too many sketchy things around Bambu for me to take them seriously.
I will concede I am using a budget Creality, and that almost none of the alternative players have the strongest reputation for open source ethics, so it is a narrowed field.
But I can see myself buying a Snapmaker, a Prusa, or a Sovol, on the budget fringes the newer Flashforge printers are shockingly good, and for the entry level I don't massively mind what Anycubic are doing with the Kobra X; it's not heavy duty but potentially has some applications.
I don't think I'd buy a Creality again. But it's in no way because of my experience with them or with the machine I bought or its upgrades; this experience has been in very significant ways a life-changing one.
I just don't think they appear to be better at doing the more closed products than they were at the dirt cheap stuff (industry-changing machines for which they catch undue shit), and they turn over new products too fast.
Where I am more challenged is CNC.
I definitely don't know how I feel here, because on the one hand I'd like a large-ish MPCNC or scrappy eBay CNC to rough out lap steel guitars and conversion necks; big coarse-ish-but-accurate woodcutting I am bad at by hand. And on the other hand, for the photography stuff in particular, I have definite applications for a Carvera Z1.
I guess the answer may be to do both. But the same process of assessment will be involved in this case.
Now I am old and have enough hobbies and want things that just work.
Got an iPad, and honestly most apps actually suck and cost monthly subscriptions plus app price, got a windows PC for music and it's horrible and full of ads.
But these 3d printers actually just work.
From a customer standpoint I can't blame them, it's sad that they can't be at least a little less evil
Not sure if Bambu was already hated back then for stuff like this. At least not that much, it just wasn't super open sure.
At this point I get a new printer for free every few months because of makerworld and their weird point system, so until I actually do any business with it I have no real reason to change my platform right now.
How does that work?
I wanted the Prusa to be just as good, which is why I started with it. I wanted to support the open ecosystem, but not at the expense of not getting to do what I actually set out to (print things nicely). It's a shame! Maybe I was holding it wrong (but again, with the Bambu, I didn't have to worry about it).
Studio is fully release IIRC, it is that "external" part which is the issue.
The linkage between that and the client should be soft enough otherwise for the server side not to inherit the responsibilities of the client. Though if part of their claims attempting to defend their current position suggest that linkage is more direct, then they are taking aim at their own foot somewhat.
Machines that take up rooms and cost hundreds of thousands of dollars existed a decade or more (probably 20 years, if I had to guess; patents) before hobby printers. I’ve not seen one retail printer that wasn’t based on the tech from giant commercial printers. And there is definitely tech in giant commercial printers that will never be retailized (laminated object manufacturing).
I understand Snapmaker has been getting some good press lately (especially the Snapmaker U1), and it would be cheaper than the equivalent Prusa and they are more open than Bambu (so far) in their deals with open source.
My only personal experience is with Prusa (and I'm a happy customer). Their machines are also built to be serviable, which matters for print farm style usage, I have heard that a Bambu just doesn't last more than a year or two in that environment. Prusas just keep going as long as you lube the bearings every now and then.
$750 vs $1,750 is not a bit more...
[0] P2S with AMS vs Core One + MMU
This would be a lot more convincing if the stolen part were the great part, as happens in music.
I would be very surprised if any kind of license like the GPL (or any license for published code) is left in 100 years or so.
DRM is another face of the same struggle, and this too shall pass. Ironically, DRM coming from the same source as the GPL (wanting to force rules onto something freely copyable), is viewed very harshly, since it supposedly interferes with your "freedom". But in the end they are the same.
Both GPL and DRM come from the idealistic fantasy that non-scarce digital goods have any (market) value at all. AI is just the latest nail in this coffin.
The person you're talking to is missing that point because they're starting at "freely copyable", while the actual default is that code is never published at all. GPL is compromise to push source code 90% of the way to "freely copyable" because the alternative is usually 0% copyable.
[1] I won't say "copyright", because if this was about pirated Marvel movies, it absolutely would be getting the same treatment.
[2] $30K Worth of Multimeters Must Be Destroyed Because They're Yellow - https://news.slashdot.org/story/14/03/19/1721253/30k-worth-o...