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Bambu Lab

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Bambu Lab
Basic information
Founded 2020
Legal Structure Private
Industry Technology
Also known as
Official website https://bambulab.com/

Bambu Lab is a Chinese technology company that designs and manufactures 3D printers. The company is based in Shenzhen, China, with locations in Shanghai and Austin, Texas. It was founded in 2020 by a group of ex-DJI engineers.

Alongside 3D printers, Bambu Lab also sells its own brand of 3D printer filament on spools with embedded NFC tags that describe the filament material, type, model. The NFC tags are meant to interact with a corresponding NFC tag reader inside their proprietary AMS (Automatic Material System).[1] A group of researchers by the name Bambu Research Group has since managed to reverse-engineer these tags, although not managing to make their own custom tags. Their project's documentation also mentions their efforts may be slowed down due to fear of repercussions from Bambu Lab.

Bambu Lab's official accompanying software package is Bambu Studio, which handles the converting (slicing) of digital model files into compatible G-code that the 3D printer can read and process. It is based on the open-source software PrusaSlicer, and draws the majority of its inner workings from it.[2] Bambu Studio is released under the AGPL-3.0 license,[3] which grants anyone the right to use, modify, and redistribute the source code. However, Bambu Lab's Terms of Use contain clauses that appear to contradict this grant, forbidding users from modifying, copying, reverse engineering, or creating derivatives of "the Product."[4]

Consumer impact summary

Post-purchase restriction of functionality

Bambu Lab has implemented firmware changes that gate previously available printer features behind mandatory cloud authentication, effectively altering the terms under which customers purchased their printers. Owners who update to the new firmware lose the ability to use third-party slicers and accessories without routing through Bambu's proprietary middleware, Bambu Connect.[5] Features restricted behind the new authentication path include:

  • Initializing prints via LAN or cloud mode
  • Remote video access to monitor prints
  • Controlling motion system, temperature, and fans
  • AMS settings and calibrations
  • Home automation integration beyond basic status monitoring[6]

Third-party product incompatibility

The authorization system rendered numerous third-party products incompatible with Bambu printers, including the popular Panda Touch accessory from Big Tree Tech (BTT) and the widely used OrcaSlicer software. BTT urged its customers not to update their firmware, as doing so would permanently break compatibility with the Panda Touch.[7] OrcaSlicer's lead developer, SoftFever, was not provided API keys for Bambu Connect and stated publicly that direct print sending from OrcaSlicer would no longer be supported.[8]

Privacy and data collection

Bambu Lab's privacy policy describes that when a user submits a print job through Bambu cloud, the company may forward configuration information, printing settings, model pictures, plate thumbnails, and G-code files. When the print history reprinting feature is enabled, Bambu may also store start times, finish times, and filament consumption data.[9]

Open-source licensing conflict

Bambu Lab publishes Bambu Studio under the AGPL-3.0 license, which explicitly grants users the right to modify, copy, and redistribute the software. At the same time, the company's Terms of Use § 3.4 forbid users from modifying, copying, reverse engineering, or creating derivatives of "the Product."[4] These two positions are in direct contradiction: AGPL § 10 prohibits the licensor from imposing further restrictions on the rights the license grants, and AGPL § 7 allows downstream recipients to strip any additional terms that exceed the license's permitted list.[10]

Restrictions on third-party development

Bambu Lab's Terms of Use § 3.1 prohibits the use of Bambu Lab technology or intellectual property to develop software or third-party devices and accessories without the company's prior consent,[4] a clause that has been present since at least January 2024.

Incidents

Authorization Control System (2025)

Main article: Bambu Lab Authorization Control System

In early 2025, Bambu Lab announced changes to future firmwares that would implement a centralised authentication mechanism that regulated connections and control over the customer's 3D printer. This new firmware would be mandatory to install and could have prevented the customer's printer from functioning until it had been. This effectively forced customers to agree to new Terms and Conditions surrounding the use of their printer, which they did not agree with upon purchase of the product.[11]

This new authentication mechanism resulted in numerous designed-for and compatible third-party products, both software and hardware, being made incompatible with the printers going forward. The chief products affected were (including but not limited to): Panda Touch, OrcaSlicer, any third-party product making use of the MQTT protocol. Soon after the updated software was released, users managed to extract necessary security keys from it to continue using their third-party products. Amendments have presently been made that would allow some or all of these products to work with workarounds or extra software or tools from Bambu embedded into these products.

Bambu Lab later responded to public outrage and controversy over these changes, stating that feedback has been provided and they would amend the firmware's new security measures with developer options that would unlock the use of the 3D printer without connecting to Bambu Lab's services.[12] However, the wording of these updates has been widely criticised by consumer rights conscious people as implying these were good-will gestures or extra granted rights, or that restriction of functionality was never on the roadmap.

Bambu Lab vocally spoke out against the public's reaction, calling many of the valid concerns "unfortunate misinformation", "false accusations" and "baseless allegations".[13] The company's initial blog post announcing the firmware changes was also edited after publication to include an FAQ section addressing whether users could remain on old firmware, a section that was not present on the day of the announcement when community members first raised their concerns.[5]

Cease and desist against OrcaSlicer fork maintainer (2026)

Main article: Bambu Lab Authorization Control System#Cease_and_desist_against_the_OrcaSlicer-bambulab_re-enablement_project

In April 2026, Bambu Lab sent a private cease-and-desist demand to Pawel Jarczak, a Polish developer who had published an OrcaSlicer fork restoring direct printer control on top of Bambu Lab's own AGPL-licensed source code. Bambu Lab alleged the fork constituted impersonation of Bambu Studio, bypassed authorization controls, violated their Terms of Use, and involved reverse engineering.[14] Jarczak rejected these characterizations, stating his work was based on publicly available AGPL source code, and asked for specifics about which files or commits were at issue. He reports receiving further broad accusations rather than specificity.[14]

Jarczak removed the repository voluntarily but stated the removal should not be interpreted as an admission that the legal or technical allegations were correct.[14] On May 7, 2026, Bambu Lab published a blog post recharacterizing the dispute as being about "impersonation" through a "falsified" HTTP User-Agent string, rather than about open-source rights.[15] The User-Agent string in question is generated by Bambu Lab's own AGPL-licensed source code in src/slic3r/Utils/Http.cpp.[16]

The incident was covered by XDA Developers, Tom's Hardware, 3Druck, and Manufactur3D, and became a flashpoint in the wider 3D-printing community over open-source licensing and consumer rights.[17][18]

Farm Manager subscription potential

Main article: Bambu Farm Manager

Bambu Lab's Farm Manager EULA contains language reserving the right to introduce fees for the software and connected services, including for commercial uses. The EULA states in capitalised text that the company "MAY CHARGE A FEE TO CERTAIN USERS OR FOR CERTAIN USES (E.G. COMMERCIAL USES)" and "RESERVES THE RIGHT TO AND MAY CHANGE THE LICENSE AND FEE STRUCTURE."[19] Despite publicly denying any subscription model,[13] the EULA language establishes the contractual groundwork for one.

Helio Additive

In mid 2025, Bambu Lab added a new functionality in a form of a third party cloud service where you can send your design to get a thermal analysis, which can be used later to optimize the print adjusting the temperature (for paid membership). Besides privacy concerns of sharing the designs with a Chinese startup, the functionality is restricted to an online-only model, with no offline simulation alternative, limiting potential open-source or community-driven innovation.

Comparisons to similar practices

Bambu Lab's practices have drawn comparisons to other manufacturers who have faced backlash and litigation over post-purchase restrictions on consumer products.

HP's printer firmware updates have rendered third-party ink cartridges unusable, leading to class-action settlements in both the United States and the European Union.[20] The Federal Trade Commission's May 2021 report Nixing the Fix described firmware-mediated cartridge restrictions as a recurring repair-policy issue.[21]

Within the 3D-printing industry, the now-defunct manufacturer MakerBot followed a similar trajectory, shifting from open-source, DIY-focused machines to closed-source, proprietary ones, which ultimately drove customers to less-expensive open-source competitors and contributed to MakerBot losing its position as an industry leader.[22]


See also

References

  1. ↑ "PLA Basic". Bambu Lab. 18 Mar 2026. Retrieved 10 May 2026.{{cite web}}: CS1 maint: url-status (link)
  2. ↑ @bambulab. "PC Software for BambuLab and other 3D printers". GitHub. Archived from the original on 10 May 2025. Retrieved 1 May 2025.
  3. ↑ "BambuStudio LICENSE (AGPL-3.0 verbatim)". GitHub. Bambu Lab. Retrieved 2026-05-10.{{cite web}}: CS1 maint: url-status (link)
  4. ↑ 4.0 4.1 4.2 "Terms of Use". Bambu Lab. 2024-04-24. Archived from the original on 2026-03-09. Retrieved 2025-05-01.
  5. ↑ 5.0 5.1 Bambu Kidd (2025-01-16). "Firmware Update Introducing New Authorization Control System". Bambu Lab Blog. Archived from the original on 2026-03-07.
  6. ↑ @Nil.lin. "Bambu Connect (beta)". Bambu Lab Wiki. Archived from the original on 2026-03-30. Retrieved 2025-05-01.
  7. ↑ @BIGTREETECH (2025-01-17). "BIGTREETECH's post". Facebook. Archived from the original on 2025-10-04.
  8. ↑ @fever_soft (2025-01-18). "This is definitely a bummer. I was negotiating for an authorization key to allow OrcaSlicer to communicate with their device like BambuStudio does, but today I was told they won't support this. Only their slicer can send prints directly; others must use their Bambu Connect application". X. Archived from the original on 2025-10-04. Retrieved 2025-05-01.
  9. ↑ "Privacy Policy". Bambu Lab. 2025-03-25. Archived from the original on 2026-03-10. Retrieved 2025-05-01.
  10. ↑ "GNU Affero General Public License Version 3, Section 10 (Automatic Licensing of Downstream Recipients)". GNU Project. Free Software Foundation. 2007-11-19. Retrieved 2026-05-10.{{cite web}}: CS1 maint: url-status (link)
  11. ↑ Tyrer-Jones, Alex (20 Jan 2025). "Bambu Lab Responds to Backlash Over New Firmware Update". 3D Printing Industry. Archived from the original on 14 Feb 2025. Retrieved 1 May 2025.
  12. ↑ Rossmann, Louis (19 Jan 2025). "Bambu Lab Firmware Update Forces Cloud Dependency & User Lock-In - AVOID THEIR 3D PRINTERS!". YouTube. Archived from the original on 19 Jan 2025. Retrieved 1 May 2025.
  13. ↑ 13.0 13.1 "Updates and Third-Party Integration with Bambu Connect". Bambu Lab Blog. 20 Jan 2025. Archived from the original on 16 Feb 2026. Retrieved 19 Mar 2025.
  14. ↑ 14.0 14.1 14.2 Jarczak, Pawel. "OrcaSlicer-bambulab — This is the end…". GitHub. Archived from the original on 2026-04-30. Retrieved 2026-05-04.
  15. ↑ "Setting the record straight on Cloud Access and Community". Bambu Lab Blog. Bambu Lab. 2026-05-07. Retrieved 2026-05-10.{{cite web}}: CS1 maint: url-status (link)
  16. ↑ "Http.cpp source file (User-Agent setter at line 175)". GitHub. Bambu Lab. Retrieved 2026-05-10.{{cite web}}: CS1 maint: url-status (link)
  17. ↑ Batt, Simon (2026-04-23). "A developer restored OrcaSlicer's features that Bambu Lab killed — then the legal threats arrived". XDA Developers. Archived from the original on 2026-04-27. Retrieved 2026-05-04.
  18. ↑ "Developer re-enables 3D printer features that Bambu Lab disabled, firm promptly threatens legal action — OrcaSlicer-BambuLab project now shuttered". Tom's Hardware. 2026-04-29. Retrieved 2026-05-10.{{cite web}}: CS1 maint: url-status (link)
  19. ↑ "BAMBU FARM MANAGER EULA AND SERVICE AGREEMENT". Bambu Lab. 2025-05-27. Archived from the original on 2026-03-07. Retrieved 19 Mar 2025.
  20. ↑ Harding, Scharon (2025-03-19). "HP avoids monetary damages over bricked printers in class-action settlement". Ars Technica. Archived from the original on 2025-03-19.
  21. ↑ Federal Trade Commission (2021-05-06). "Nixing the Fix: An FTC Report to Congress on Repair Restrictions" (PDF). Federal Trade Commission. Retrieved 2026-05-10.{{cite web}}: CS1 maint: url-status (link)
  22. ↑ Benchoff, Brian (2016-04-28). "The MakerBot Obituary". Hackaday. Archived from the original on 2025-12-08. Retrieved 2025-05-01.
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