After the initial thrill of 3D printing wears off, one begins to look for possible improvements. One of the most sought-after improvements is the ability to print color objects. We don’t mean “a” color, we mean “many” colors. Since plastic filament comes in only one color (except for that elusive Tartan filament we were looking for the other day), color printing is kinda difficult.
Read more from the original source: Multicolor RepRap Printing Progresses