For multi-colour 3D printing, a regular twin extruder 3D printer, one which encompasses a single mount for the dual nozzles, is good enough. But don’t expect it to generally be as rapidly as only one extruder 3D printer, looking at the additional fat on the print head has an effect https://andreslfxoe.eedblog.com/29752377/facts-about-multicolored-3d-printer-revealed