Keep in mind, with hobby-grade printers, multiple color printing has a lot of problems even if you do have multiple extruders. This isn’t a panacea.

It unlocks a single extruder printer to behave like a multi-extruder model without stopping and starting. Mosaic pulled off a very difficult combination of two methods mentioned above.

The Diamond Hotend is a new type of 3D printer extruder that prints in multiple colors from a single nozzle ...