Control your Bambu Lab 3D printer as a CNC cutter or plotter. Convert SVG/DXF files to G-code and execute them with a web-based control interface.

This can brake your printer, or you, or your cat, or all of the above. Especially if you put a knife on your printer. Using this software there will be no hard limits of the printer movements, make sure your gcode is reasonable.

The origin of the print is at the current tool head position for X and Y. The Z=0 is set with the jogger, always make sure the Z is correctly zeroes. Otherwise it can plunge the knife into the print bed.

The printer needs to be in LAN mode with developer options enabled, or run an older firmware (1.0.4 worked for me)

pip install git+https://github.com/unrelatedlabs/bambu-cuts.git
bambucuts server

ploting on fabric

cutting a sticker with a drag knife

3D printed pen holder for plotting operations

Print in PETG! PLA tends to creep more.

Parts:

• 2mm ID 6mm OD 3mm deep bearing 2x. https://amzn.to/46W4Ju7
• roland style 2mm shaft blades https://amzn.to/4gY9w2Q
• 7mm OD, 20mm long spring https://amzn.to/4mQEISK
• 1.7mm diameter 13mm long steel rod. (I cut a nail to size)
• a small magnet to hold the blade. I've attached it on the clamp after the cutter is mounted on the printer.

The cutter assembly fits in the place of the hot end. Insert to a piece of filament to control the spring tension with the extruder.

• 🎮 Web-based Control Interface - Jog controls, G-code editor, and live monitoring
• ✂️ SVG/DXF to G-code Conversion - Convert vector graphics to cutting paths


Detailed cross-section view of the cutter mechanism

• 🖥️ CLI Tools - Command-line utilities for batch processing

3D printed pen holder for plotting operations

• 🔄 3MF Integration - Automatically packages G-code for Bambu Lab printers

git clone git@github.com:unrelatedlabs/bambu-cuts.git
cd bambu-cuts
pip install -e .

Quick Start (Linux/Mac):

./run.sh

Manual Setup:

# Create and activate virtual environment
python3 -m venv .venv
source .venv/bin/activate  # On Windows: .venv\Scripts\activate

# Install dependencies
pip install -r requirements.txt

# Run the server directly
python -m bambucuts.webui.app

Open http://localhost:5425 in your browser.

# Build the Docker image
docker build -t bambucuts .

# Run the container (interactive for first-time config)
docker run -it -p 5425:5425 bambucuts

# Or run with existing config (non-interactive)
docker run -p 5425:5425 -v ~/.bambucuts.conf:/root/.bambucuts.conf bambucuts

Note: Use -it flag on first run to interactively enter printer configuration. After configuration is saved, you can mount the config file with -v flag for subsequent runs.

Open http://localhost:5425 in your browser.

After installation with pip install -e .:

bambucuts server

On first run, you'll be prompted for your printer configuration. Configuration is saved to ~/.bambucuts.conf

Open http://localhost:5425 in your browser.

bambucuts svg2gcode input.svg -o output.gcode

bambucuts dxf2svg input.dxf -o output.svg

• bambucuts server - Start web interface
• bambucuts svg2gcode INPUT - Convert SVG to G-code
• bambucuts dxf2svg INPUT - Convert DXF to SVG

Run bambucuts --help for full options.

• Create SVG in Inkscape
• create gcode in Kiri:Moto https://grid.space/kiri/ The machine settings for Kiri:Moto are at examples/kirimoto_settings.- I check my gcode with https://ncviewer.com
• In the webui set Z=0 with the jogger
• Move the print head to where the bottom left of the image is supposed to start.
• Load gcode in webui
• Print 3mf

I use these cutting mats to hold the material https://amzn.to/3Ixn2xJ

This software is licensed under the GNU General Public License v3.0 or later (GPL-3.0-or-later).

See License.txt for the full license text.

You are free to use, modify, and distribute this software under the terms of the GPL-3.0 license.

All 3D model files (.3mf, .stl, .obj, etc.) in this repository are licensed under the Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0).

See LICENSE-3D-FILES.txt for the full license text.

• ✅ You may share and adapt the 3D files
• ✅ You must give appropriate credit
• ❌ You may not use the 3D files for commercial purposes