multiple filament bowden extruder drive

thingiverse

This proof of concept demonstrates driving three filaments using two motors, with one controlling the filament while another operates a cam to push it onto the drive shaft. The inventor is preparing for testing but acknowledges issues such as limited access to the drive mechanism and portions designed for machining instead of 3D printing. Side plates may be too large for some printers, but some parts were successfully printed. A redesign might be needed for compatibility with other motors. Improvement suggestions are welcome, and updates include IGES, SW2005 files, exploded images, and working videos. To assemble, print or mill the side plates, machine drive shaft and camshaft, and print infeed and top plates. Required parts consist of 32 pitch gears, bearings, Teflon tubing, and pipe fittings.