Software Freedom Conservancy documents Bambu Lab's AGPL license violation
At FOSSY 2026, SFC leaders presented findings on how the 3D-printer maker circumvents the copyleft license the AGPL was designed to prevent.
What to know
- The SFC documented how Bambu Lab's proprietary studio software and server-side components violate AGPLv3—the exact scenario the license was designed to prevent.
- The case has catalyzed engagement between the free software community and 3D-printing enthusiasts, creating what SFC leaders call rare activism opportunities.
- Users have developed workarounds (LAN mode, reverse-engineered networking plugins) to operate printers offline, but compliance with AGPL remains unresolved.
The dispute Whether Bambu Lab's practical quality and usability justify continued purchase despite the AGPL violation and proprietary practices, or whether users should abstain and support alternatives. · positions read across 25 posts and comments
AGPL violation warrants legal enforcement, possibly through trade courts or import blocking.
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“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…”
ChuckMcM · Hacker News
Bambu's printers work well in practice; users should avoid them on principle and support alternatives.
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“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.”
dofm · Hacker News
Users can operate Bambu printers offline using LAN mode and open-source reverse-engineered tools, mitigating privacy and philosophical concerns.
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“For current owners who want to avoid Bambu's servers entirely, consider LAN mode with OrcaSlicer and this open source reverse engineered networking plugin”
hamdingers · Hacker News
Bambu printers offer practical value that outweighs ideological concerns about proprietary practices.
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“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”
herbst · Hacker News
Bradley Kühn Software Freedom Conservancy co-founder
Karen Sandler Software Freedom Conservancy leaderDenver Gingerich Software Freedom Conservancy activistBambu Lab 3D-printer manufacturer
The record 1 articles and posts · last 30 days
What people are saying 24 voices from 1 site · best of 25 · verbatim
- What specific compliance steps would Bambu Lab need to take to meet AGPLv3 requirements?
- Are there 3D-printer alternatives offering comparable quality and precision at similar price points?
- What enforcement mechanisms are available to the SFC against a company that may be difficult to reach through U.S. courts?
- Aug 28
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I just bought an A1 as my first 3D printer and didn’t even install Bambu Studio. It’s in LAN mode and I send it jobs from Orca Slicer on my Mac. Don’t see the need to monitor it from my phone.
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I just knew this would be about Bambu.It is nuts that they can be fairly transparent how anti-consumer they are while still succeeding. It's really a testament to the quality of their printers, marketing, and long-term strategy.If you want to print multi-filament without an AMS, it's a massive hassle. You need to insert custom G-code. Even though…
- Aug 27
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If there's ai code, it'll be good to see if the GPL will be allowed to be enforced. I'm worried about the copyright endgame.
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No offense to LWN -- normally, your articles are well researched and well written, but, sheesh, this one was a total word salad. The full article is 2500 words. It could easily be trimmed by 50% with judicious editing. Literally, I needed to read 1000 (!) words to find this paragraph: > Bambu Studio would pop up a request to download "a little…
- Aug 26
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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.[2] $30K Worth of Multimeters Must Be Destroyed Because…
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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.
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This part gives me hope, but I have not been able to find the certificate:Option B: cloud mode without Developer ModeStarting 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…
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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.
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I know I'm worried when they're going to start mandating client-side scanning of 3D prints.
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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…
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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?
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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…
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> 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…
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I have several, and they're all running in DevMode/LAN Mode. I drive them using this project:
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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…
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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.
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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…
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> 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…
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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.)
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After reading the article I don’t understand what the downloaded components are blocking in the slicer. What features aren’t available?
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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-networkingI have verified that my P2S in LAN mode never attempts to make external connections at all (blocked it anyway, of course) and OrcaSlicer + this…
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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.
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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…
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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…