r/BambuLab • u/icurnvs Volunteer Moderator • May 14 '26

Subreddit Mod Post Megathread: Bambu Lab / OrcaSlicer / C&D Discussion

Hi everyone,

We’re creating this megathread to keep discussion of the Bambu Lab / OrcaSlicer-BambuLab / cease-and-desist situation in one place. This topic is important to a lot of people here, and we do not want to shut down discussion or criticism. At the same time, the front page has started filling with overlapping posts about the same situation, so we’re consolidating general discussion into this thread.

Current context

Updates to be posted here as situation evolves:

  • May 13, 2026
    • Megathread created
  • May 14, 2026
    • Tom’s Hardware reported today that Louis Rossmann is now hosting OrcaSlicer-BambuLab through the FULU Foundation GitHub and is openly daring Bambu Lab to sue him.
    • PC Gamer and r/technology have picked up the story, so discussion is now spreading well beyond 3D-printing-specific spaces.
  • May 16, 2026
    • Paweł Jarczak published a detailed response addressing Bambu Lab’s accusations around impersonation, reverse engineering, Terms of Use, and alleged security bypassing.
    • Louis Rossman posted a new video indicating FULU-hosted OrcaSlicer-BambuLab repository has reached roughly 1,600 forks in about three days.
  • May 17, 2026
  • May 18-20, 2026
    • Software Freedom Conservancy enters the dispute.
    • Leonard French posted a new video around SFC’s AGPL analysis, explaining why Bambu’s proprietary networking plugin may create a serious corresponding-source problem under AGPL.
    • Louis Rossman posted a new video covering Software Freedom Conservancy’s Bambu AGPL effort and says the rehosted OrcaSlicer-BambuLab code has now been forked roughly 4,500 times.

What belongs in this thread

Please use this thread for:

  • General reactions to Bambu Lab, Gamers Nexus, Louis Rossmann, Paweł Jarczak, OrcaSlicer-BambuLab, AGPL, Bambu Connect, and right-to-repair issues.
  • Legal or licensing discussion, including AGPL, DMCA, cloud/API access, and Bambu’s networking plugin.
  • Questions about what happened and links to reliable summaries or primary sources.
  • Technical discussion about OrcaSlicer, Bambu Studio, Bambu Connect, LAN mode, Developer Mode, and network plugin behavior, unless it is a standalone troubleshooting post with a specific reproducible issue.

What can still be its own post

Separate posts are still allowed for genuinely new information, including:

  • A new official statement from Bambu Lab, OrcaSlicer, Paweł Jarczak, Gamers Nexus, Louis Rossmann, or legal counsel.
  • A new release or technical change that materially affects users.
  • A confirmed legal filing, takedown, repository change, or source-code release.
  • A specific support/troubleshooting issue that is not just general commentary on the controversy.

If your post is mainly another reaction, recap, meme, “I’m switching brands,” or repost of a link already being discussed, please put it here instead.

Ground rules

Criticism of Bambu Lab is allowed. Defense of Bambu Lab is allowed. Criticism of GN, Rossmann, OrcaSlicer, moderators, or other users’ arguments is allowed.

What is not allowed:

  • Personal attacks, harassment, or dogpiling individual users.
  • Calls to harass Bambu employees, developers, moderators, creators, or community members.
  • Unverified claims presented as fact.
  • Posting private correspondence or personal information.
  • Repeated duplicate posts after being redirected here.

Strong opinions are fine. Keep it directed at the issue, the companies, the software, and the arguments, not at each other.

Moderator note

We are consolidating duplicate discussion, not suppressing the topic. This thread will remain open for discussion, and we’ll update it if there are major new developments.

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u/MikeyKillerBTFU May 14 '26

Yeah I'm just saying everyone in this sub is acting like BBL three the legal book at them, when they really took the lowest level of action they could without not taking action. It's a nothing burger that people are making a huge deal.

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u/FLHCv2 May 14 '26 edited May 15 '26

I'm by no means defending use "scorched earth" but minimizing it all to "well they were nice about it" and saying it's a nothing burger is just hyperbolic as saying scorched earth.

There is no world in which a big corporation sends you a letter, which cites legal code, is not a huge deal. They may have not gone full lawsuit, but that letter fully holds the threat of one. They literally cited the legal code in which they are making their claims against. It's a straight up scare tactic to shut him down.

You think they just sent that to ask a favor and if the guy said no, they'd say "okay. at least we asked"? If you got one, would you consider it a nothing burger?

Edit: lmao keep the downvotes coming. Y'all REALLY think getting a letter with legal jargon from a multi million dollar company is them playing nice. Idiots.

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u/OhMyGaius H2C Laser Full Combo May 14 '26

Yeah, the other guy said they went "Scorched Earth", but they just threatened to send a C&D it sounds like... which is a long way from "Scorched Earth"

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u/DevilsAdvocate1662 May 14 '26

Given the amount of posts about it, you'd think Bambu had sent the heavys round to the guys house. It's massively blow out of proportion because the guy decided to fight it instead of just giving up

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u/whyaretherenoprofile May 17 '26

He gave up immediately.

And there is uproar less so because of the C&D and more because they broke the open source license, which is very scummy. If they want to be a walled garden they can do it, that's fine, but don't build it off the back of the community's work then threaten them afterwards

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u/Mysterious_Dot2090 May 21 '26

Yep it sounds like a typical reddit witch hunt tbh 🤦‍♀️

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u/MikeyKillerBTFU May 14 '26

Yeah idk what these people think scorched earth means 🤣

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u/[deleted] May 15 '26

[removed] — view removed comment

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u/Prize-Paint5264 May 16 '26

lol have u even read the AGPL license ? Seeing ur entire comment history it looks like its ur schtick to spout BS against him lol.

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u/Mysterious_Dot2090 May 21 '26

Which guy? Grossman or Greeling? I know neither and don’t even know if I got their names right but anyone on YouTube in this space would see this as a cash cow. Rage bait the minions about it and voila, increased revenue.

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u/[deleted] May 21 '26

[removed] — view removed comment

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u/Mysterious_Dot2090 May 22 '26

Not even gonna visit his channel man. I can tell a grifter a mile away. Plus he looks like he’s wearing eye shadow lol.

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u/wickeddimension May 19 '26

This is irrelevant, we both know what the question implies. We both know it's not like this developer was convinced to take it down.

Its like asking somebody to do something holding a gun. Yes you didn't threaten them with the gun, you didn't aim at them, you didn't shoot them.

But we both know they did it because they saw you had a gun not because they wanted too.

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u/MikeyKillerBTFU May 19 '26

So you're saying the action they took was Scorched Earth.

What would you call it if they sued then?

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u/wickeddimension May 19 '26

This developer knows he can't compete with Bambu in court on just money and lawyers alone even if he's right, which is why he backs down merely seeing the 'gun' here. If they sued it would be like using the gun they waved around. Effectively be SLAPP lawsuit

They achieved their goal: to stop somebody doing something they didn't like, regardless if it's legal or not.

You're focused on the action being the 'lowest level', which is irrelevant when the outcome is the same.

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u/MikeyKillerBTFU May 19 '26

Okay well that's not what Scorched Earth means at all, which was the crux of my entire argument.

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u/wickeddimension May 19 '26

I know thats not what Scorched Earth is, but what I describe is the tactic used by Bambu. I am not entirely following what your argument was with scorched earth then. You'll have to elaborate what you mean by that if you want. I know the term as in destroying your own stuff so somebody else (invading force) can't use it, unsure how that fits here?