For multi-coloration 3D printing, a regular twin extruder 3D printer, one which contains a one mount for the twin nozzles, is ok. But don’t be expecting it for being as quickly as an individual extruder 3D printer, considering the additional body weight to the print head influences the print velocity. https://7bookmarks.com/story17920270/detailed-notes-on-multicolored-3d-printer