Monoprice Select Mini / Mini Pro Flexi-struder

thingiverse

This is a flexible material extruder for the Monoprice Select Mini and Mini Pro. It is designed to be an exact replication, however there is a straight bore for the PTFE tube to slide all the way up to the extruder gear and bearing combination instead of a shelf. This allows for fairely good flexible filament printing at low speeds. Once these parts are installed in place of the factory components, simply cut the end of the PTFE tube to match the angle created by the gear and bearing. This angle does not have to be perfect, but it should fill the most gap possible where there is an angle at the gear and bearing. The better this cut is formed to the angle, the better it will handle softer, flexible filaments. After cutting the desired angle, push the tube as close to the extruder and bearing as possible. The factor length of PTFE tubing is long enough to do this without having to buy a longer length tube.