Category:Extruders

The Darwin and Mendel Repraps were designed to extrude PLA plastic. People have developed many ways of improving on the original extruder. It didn't take long before people starting trying to make them extrude other stuff. Such as delicious frosting: Frostruder[1]. RepRap forums: "Frostruder MK2 = Granular extruder?"[2].

To extrude plastic, you need to heat up plastic enough to melt (the "hot end"), and push the plastic hard enough that it comes out at a reasonable speed onto the part-being-printed (the "cold end").