Prusa releases open-source ColorMix for multi-color 3D printing
Original: Print with dozens of colors: Our new open-source ColorMix for PrusaSlicer
Why This Matters
Democratizes multi-color 3D printing by making complex color mixing accessible
Prusa Research launched ColorMix, an open-source color mixing model for PrusaSlicer and EasyPrint that enables multi-material 3D printers to produce dozens of colors using just five filaments (CMYKW). The MIT-licensed technology alternates colored layers at 0.1mm height to create color blends visible to human eyes.
Prusa Research released ColorMix, an open-source color mixing system that allows multi-material 3D printers to print in dozens of colors using only five filament spools. The technology uses CMYKW (Cyan, Magenta, Yellow, Black, White) filaments and alternates colored layers at 0.1mm height, similar to traditional 2D printing halftoning methods. The system is integrated into PrusaSlicer and EasyPrint, connected to the OpenPrintTag Material Database for real material data. Prusa calibrated the color mixing model against measured FDM prints and plans to release a dedicated Prusament CMYKW filament set. The MIT-licensed model builds on community projects like Ratdoux's OrcaSlicer-FullSpectrum and Justin H. Rahb's filament-mixer, providing more accurate color previews than existing solutions.