[Teaching Tech] sprung about $80 or a kit to add dual extrusion to his 3D printer ... the servo bracket and high-torque servo is really the secret sauce to this dual extruder.

A few months ago, a very inexpensive 3D printer ... to do dual extrusion, and the PTFE tube in the extruder won’t let you print really exotic plastics, but most people aren’t printing with ...