Prusa adds ColorMix software and near-zero-waste INDX toolchanger
Prusa paired ColorMix with INDX, a CORE One+ toolchanger built for up to eight materials and far less purge waste.
Prusa Research pushed multicolor printing toward a cleaner, less annoying workflow with two linked moves: ColorMix software that can blend loaded filaments into new shades, and INDX hardware that cuts purge-heavy tool changes out of the equation. The company’s pitch was not just more colors, but fewer compromises around waste, support removal, and print planning.
ColorMix arrived in PrusaSlicer 2.9.6 and EasyPrint on May 26, 2026, as an open-source engine built to combine loaded filaments into new results rather than locking each spool to a single shade. Prusa said it calibrated the mixing model against measured FDM prints, tied it into the OpenPrintTag Material Database, and was preparing a dedicated Prusament CMYKW set to make the system more reliable. The company said the CMYKW approach could produce dozens of colors from a small number of filaments, which makes the feature feel less like a novelty and more like a practical way to use what is already on the shelf.
The hardware side, INDX, is aimed at the same problem from the other end of the workflow. Prusa said the INDX conversion kit was built for the CORE One+ and supports up to eight independent toolheads or materials, with separate material paths, easy-to-remove or dissolvable supports, nozzle-size switching inside a single print, and near-zero-waste multicolor printing. Orders for the conversion kit opened on May 26, 2026, and shipping for the Prusa Edition upgrade kits was set to start in June 2026.
Bondtech’s technical details added the clearest sense of why INDX is being sold as a serious toolchanger rather than a flashy accessory. Bondtech said the system uses induction heating, infrared temperature sensing, and a dynamic dual-drive extruder, with nozzle heat-up taking 4 to 12 seconds and a complete tool change, including heatup, taking about 14 seconds. Prusa had earlier said the first run would be a 1,000-unit Founders Edition through Bondtech, with shipping originally planned for Q1 2026.
Taken together, ColorMix and INDX show Prusa leaning into a bigger idea than just multicolor printing. The company is trying to make color work inside the slicer, inside the spool data, and inside the machine itself, so users spend less time burning filament on purge material and more time getting useful parts off the bed.
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