For multi-colour 3D printing, a daily twin extruder 3D printer, one which contains a single mount for the dual nozzles, is ok. But don’t anticipate it to get as fast as a single extruder 3D printer, taking into consideration the additional bodyweight over the print head impacts the print pace. https://delta-8-oils75173.yomoblog.com/35940459/multicolored-3d-printer-fundamentals-explained