D.E.I.S.S. Dual Extruder Interfacing Single Stepper (Robo3D)

The D.E.I.S.S. extruder provides a dual extruder with only one stepper motor by the help of an RC servo. This makes it possible to realize a dual direct drive extruder which is lightweight and space efficient, it's only slightly bigger than a wade extruder. Because it is a direct driven extruder with PTFE tube, it is possible to use flexible filament as well as PLA or ABS.

The extruder was designed for the Robo3D printer, but could be adapted to many printers by adapting the x-carriage. Th