For multi-coloration 3D printing, a regular twin extruder 3D printer, one that includes a one mount for the dual nozzles, is adequate. But don’t hope it being as rapidly as one extruder 3D printer, considering the extra body weight over the print head has an effect on the print velocity. https://daltondvnnz.blogolenta.com/26654566/how-much-you-need-to-expect-you-ll-pay-for-a-good-multicolored-3d-printer