For multi-coloration 3D printing, a regular dual extruder 3D printer, one which incorporates a one mount for the dual nozzles, is ok. But don’t count on it to get as rapid as a single extruder 3D printer, considering the additional excess weight around the print head impacts the print speed. https://website86208.blog-kids.com/29855360/multicolored-3d-printer-things-to-know-before-you-buy