Cubiron is a fully DIY, ultra-compact FDM 3D printer designed for low-cost, small-format printing, and hands-on learning. It's built entirely from open-source parts and the cheapest components available, using custom printable mechanics and Klipper firmware.
- 03/09/2025: Added files for 1st public release.
- 🔲 70x70x65mm Print Volume
- 📏 144x145x148mm Printer Size
- 🚀 Up to 500mm/s and 10k mm/s²
- 💧 ~10mm³ Flow with PLA
- 🏷️ ~$270 Hardware cost
- 🧰 1.5kg or 3.3lbs Weight
- 🔌 USB-C 20V
- 💡 All 3d printed parts from PETG
- 📐 Includes CAD files, BOM, STLs, printer.cfg, and slicer profiles
| Folder/File | Description |
|---|---|
CAD/ |
Source and STEP files |
STLs/ |
Printable parts |
firmware/ |
Klipper config-files |
docs/ |
Build manual, BOM |
LICENSE |
CERN-OHL-S v2 license |
README.md |
You're here! |
| Feature | Value |
|---|---|
| Build Volume | 70 × 70 × 65 mm |
| Hotend Temp | Up to 230°C due to 20V |
| Drive Belts | 2GT, 3mm wide |
| Linear Rails | MGN9C - 100mm |
| Extruder | Hummingbird w/ HGX-Lite parts |
| Hotend | BambuLab clone hotend |
| Board | Mellow Fly Micro4 |
| SBC | Raspberry Pi Zero 2W |
| Filament | PLA only |
| Print Bed | Cold, mechanical mount |
| Firmware | Klipper |
| Power Supply | USB-C PD 20V 100W |
- Read the "Printing Guidelines" section in the build guide!
- 3D print the STLs in
STLs/ - Follow the build guide in
docs/build_manual.pdf - Flash Klipper on your Pi Zero 2W
- Upload
printer.cfgand tune as needed
- Inspired by the DIY 3D printing community
- Thanks to the creators of Klipper, Hummingbird, and open hardware pioneers
This is a passion project — feedback, pull requests, remixes, and improvements are welcome! For any further inquiries, feel free to reach out to my e-mail: rocode.office@gmail.com
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Cubiron is licensed under the CERN-OHL-S v2 license.
This means you can use, modify, build, and sell it — but you must share changes under the same license.