For multi-color 3D printing, a regular twin extruder 3D printer, one that includes a one mount for the twin nozzles, is ok. But don’t expect it to get as speedy as just one extruder 3D printer, looking at the additional excess weight within the print head influences the print velocity. https://xyzbookmarks.com/story17880044/examine-this-report-on-multicolored-3d-printer