SlicerBridge

SlicerBridge

Any multicolor 3MF project in. A ready, checked file for every multicolor printer out.

You paint a multicolor model in one slicer. The people who print it own a Bambu Lab A1, a Creality K2, an Elegoo Centauri Carbon, a QIDI Q2, a Prusa XL, a Snapmaker U1… and each of them has to retarget your project to their printer by hand, guessing at presets, and often losing the colors on the way.

SlicerBridge takes the project from whichever slicer you made it in (Bambu Studio, OrcaSlicer, or a printer maker's own fork of either) and writes one file for each of 30 printers, named for that printer (My Model - Creality K2 Plus.3mf), so a downloader can open theirs and print. Its files for Bambu Lab, OrcaSlicer-family and U1 printers can go back in, for yet another printer. Every file:

• keeps the colors where you painted them. The filaments a model actually uses are kept in order, and every painted triangle is re-encoded to match.
• carries that printer's own settings, written by its own slicer, and that printer's filament presets. Your print settings (layer height, walls, infill, supports) come along where the printer has the same setting.
• keeps its size. Nothing is ever scaled. A model bigger than a bed gets a warning with the scale that fits.
• is checked before it's written: colors, paint, plates, size and settings, and optionally sliced in that printer's slicer to prove automatic color changes and a prime tower clear of the model. A file that fails a check is never written.

What goes in

A multicolor .3mf project, painted or with colors per part or object, saved by any of these. They all write the same project format.

Saved by
Bambu Studio	tested (2.8)
OrcaSlicer	tested (2.4.2)
QIDI Studio, Anycubic Slicer Next, ElegooSlicer, Flash Studio	tested with projects each of them saved
SlicerBridge	its files for Bambu Lab, OrcaSlicer-family and U1 printers, to retarget them again
Creality Print	should work, not yet tested: its command line can't save a project (tell us)
PrusaSlicer	not yet: PrusaSlicer projects are a different format

A mesh-only 3MF (no slicer project inside) is refused with what to do: open it in your slicer, give it its colors, and save the project.

What comes out

Printer	Key	Colors	File built for	Brand slicer checked
Bambu Lab A1 mini	a1mini	4	Bambu Studio	—
Bambu Lab A1	a1	4	Bambu Studio	—
Bambu Lab P1S	p1s	16	Bambu Studio	—
Bambu Lab P2S	p2s	16	Bambu Studio	—
Bambu Lab X1 Carbon	x1c	16	Bambu Studio	—
Bambu Lab H2S	h2s	16	Bambu Studio	—
Bambu Lab H2D	h2d	16	Bambu Studio	—
Bambu Lab H2C	h2c	16	Bambu Studio	—
Creality K2 Plus	k2plus	4	OrcaSlicer	Creality Print
Creality K2 Pro	k2pro	4	OrcaSlicer	Creality Print
Creality K2 SE	k2se	4	OrcaSlicer	Creality Print
Creality Hi	hi	4	OrcaSlicer	Creality Print
Creality K1C CFS	k1c	4	OrcaSlicer	Creality Print
Elegoo Centauri Carbon	cc	4	OrcaSlicer	ElegooSlicer
Anycubic Kobra S1	kobras1	4	OrcaSlicer	Anycubic Slicer Next
Anycubic Kobra S1 Max	kobras1max	4	OrcaSlicer	Anycubic Slicer Next
Anycubic Kobra 3	kobra3	4	OrcaSlicer	Anycubic Slicer Next
Anycubic Kobra 3 Max	kobra3max	4	OrcaSlicer	Anycubic Slicer Next
Anycubic Kobra X	kobrax	4	OrcaSlicer	Anycubic Slicer Next
Flashforge AD5X	ad5x	4	OrcaSlicer	Flash Studio
Flashforge Creator 5	creator5	4	OrcaSlicer	Flash Studio
QIDI Q2	q2	4	OrcaSlicer	QIDI Studio
QIDI Q2C	q2c	4	OrcaSlicer	QIDI Studio
QIDI Plus4	plus4	4	OrcaSlicer	QIDI Studio
QIDI Max4	max4	4	OrcaSlicer	QIDI Studio
Prusa MMU3	mmu3	5	PrusaSlicer	—
Prusa XL	xl	5	PrusaSlicer	—
Prusa Core One INDX 4T	indx4	4	PrusaSlicer	—
Prusa Core One INDX 8T	indx8	8	PrusaSlicer	—
Snapmaker U1	u1	4	Snapmaker Orca	—

"File built for" is the slicer whose settings the file carries. Files for Creality, Elegoo, Anycubic, Flashforge and QIDI printers are written by OrcaSlicer and also checked in each maker's own slicer: see docs/brand-slicers.md for what those slicers read differently, and how the files handle it. Missing your printer? Ask for it, or add it.

Install

SlicerBridge runs on macOS and Windows (what's different there; Linux: help wanted), with Python 3.10 or newer.

pipx install slicerbridge                                    # or: uv tool install slicerbridge
pipx install git+https://github.com/UnicornGraveyard/SlicerBridge   # the latest from GitHub

It builds each printer's settings with that printer's slicer, so install the ones you need:

To write files for	Install
Bambu Lab printers	Bambu Studio
Creality, Elegoo, Anycubic, Flashforge, QIDI	OrcaSlicer 2.4.2
Prusa printers	PrusaSlicer
Snapmaker U1	nothing: its templates are built in

Then slicerbridge doctor shows what it found. Details, other install locations and environment variables: docs/install.md.

Use

slicerbridge inspect model.3mf                       # colors used, plates, fit on each bed
slicerbridge convert model.3mf                       # the popular printers, into out/<model>/
slicerbridge convert "Dragon - Creality K2 Plus.3mf" --printers bambu   # retarget a file you already have
slicerbridge convert model.3mf --printers all --slice --name "My Model" --prefix "My Shop - "
slicerbridge convert model.3mf --printers creality,qidi,u1
slicerbridge printers                                # every printer, its key, engine and slicer
slicerbridge verify "out/My Model" --source model.3mf --slice
slicerbridge brand-check "out/My Model"              # slice each file in its maker's own slicer

--printers takes all, popular, a vendor (bambu, creality, elegoo, anycubic, flashforge, qidi, prusa, snapmaker), or printer keys, comma-separated.

What it won't do

• Merge colors. A model that uses more filaments than a printer holds is refused for that printer. Which two colors to merge is a design decision; make it in your slicer. (Prusa printers take an explicit --map.)
• Resize anything. Size is never a reason to skip a printer either: the downloader scales it in their slicer.
• Write a file that failed a check, or overwrite a file it didn't write (those move to _previous/).

Use it from Claude or another AI assistant

SlicerBridge includes a local MCP server, so an assistant can inspect a model, convert it for the printers you name, and read the check results for you. It runs on your machine over stdio, with your slicers: nothing is uploaded.

Claude Code and Cowork: install the SlicerBridge plugin, which adds the server and a skill that teaches Claude the workflow. It needs uv.

/plugin marketplace add UnicornGraveyard/SlicerBridge
/plugin install slicerbridge@slicerbridge

Any other MCP client: run uvx slicerbridge mcp (or slicerbridge mcp once installed). Setup for Claude Desktop and others: docs/mcp.md. It's also listed in the MCP Registry as io.github.UnicornGraveyard/slicerbridge.

How it works

Every input is read the same way: Bambu Studio, OrcaSlicer and their forks save the same 3MF project format (meshes, paint, plates, settings). Three engines write the outputs, sharing one printer table, one CLI and one set of checks:

• orca: Bambu Lab and OrcaSlicer-family printers. Each printer's slicer writes its settings once, from its own bundled presets (templates). A file is the source project with those settings, its filaments compacted and its paint re-encoded, each plate moved onto its own plate of the new bed with room for the prime tower.
• prusa: Prusa multi-material printers, written by Panda2Prusa as PrusaSlicer projects, one per plate.
• u1: the Snapmaker U1, with bl2u1's U1 templates.

docs/how-it-works.md explains each step; docs/checks.md lists every check.

Contributing

Bug reports, printer requests and pull requests are welcome: start with CONTRIBUTING.md. Please don't attach paid or licensed models to issues; the test suite builds its own projects.

License and credits

SlicerBridge is free software under the GNU GPL v3 or later. It stands on Panda2Prusa (MIT, vendored) and bl2u1 (GPLv3, its U1 templates), and on the work of the OrcaSlicer, Bambu Studio and PrusaSlicer projects, whose profiles it reads from your own installs. See THIRD_PARTY_NOTICES.md.

Made by Unicorn Graveyard, who needed every ColorStacked model to reach every printer.