BambuLoop — Free open-source automated repeat-printing for the H2S

Bambu Lab H2 Series
1

Hi everyone,

I just released BambuLoop on GitHub — a free, open-source web-based print farm tool for automated repeat printing on the Bambu Lab H2S.

Web UI Screenshot:

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Drop your sliced .gcode.3mf files into the browser UI, set a repeat count, and BambuLoop generates a single combined G-code that loops unattended:

PRINT → COOL → EJECT (nozzle sweep) → REHEAT → PURGE → next PRINT

Perfect for

  • Mass-producing a single part — run 50× empty filament spools, brackets, organizers, or anything you’d normally have to babysit between prints
  • Overnight multi-model jobs — queue several different models into one job, hit send once, and let the printer chew through them while you’re asleep or away from the desk
Click here to show real printing demo GIF

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Key features

  • No extra hardware needed — After each print, the printer automatically cools the bed using its built-in fans, then the nozzle head itself pushes the part off before the next print starts.
  • No printer tilting required — the printer stays level on your desk; no rigs, no ramps, no gravity tricks
  • Multiple eject patterns — edge_to_center, bottom_only, etc., with an in-UI preview
  • Built-in safety checks — Z-collision validation, multi-model compatibility check, and per-command G-code simulation before output
  • Dry-run mode — generates a G-code that runs only the automation sequence (no actual print) so you can verify the sweep on an empty bed
  • Works with stock hardware — a cold-release plate (e.g. CryoNix PUR) gives the most reliable results, but the stock textured PEI also works

:warning: Unofficial software, not affiliated with Bambu Lab. Please run a dry-run and watch the first full cycle before walking away.

It’s a fresh release, so bug reports, feedback, and PRs are all very welcome. If you try it, I’d love to hear how it goes on your setup.

Released under the MIT License — free to use, modify, and redistribute.

Thanks, and happy looping :cyclone:

+P.S. I don’t know why this post was marked as spam :face_with_raised_eyebrow: - I am not earning any revenue from this project, and since the project is MIT license, it can be reused or used commercially without permission for free. Furthermore, this post complies with the Community Guidelines.
I just simply hope that H2S users can use their printers more conveniently and effectively :slight_smile:

4

Hmm pretty cool. Too bad I don’t have an H2S :face_exhaling::pensive_face:

5

Thanks! Looks like you’re running a P1S — as far as I know, FarmLoop by 3D Farmers supports the P1S. But FarmLoop comes in a free and a paid version, and the free tier has some feature limitations.

6

This is working quite well for me but I am using a textured PEI plate and the printer is saying that I have a build plate mismatch. Everything looks to be in order as far as I can see, and the plate is called out correctly in the GCODE output from the software. I’m going to do some other debugging, but if you had any advice for why I am getting this error it would be greatly appreciated. I am a machinist and am comfortable reading and debugging raw GCODE for whatever that is worth.