28BYJ48 Micro Extruder

This is a compact extruder based on the cheap (both in price and quality) 28BYJ48 stepper motor. It was designed for printing flexible filaments via one channel of a diamond hotend.

Features:
- Bowden tube out, guided in.
- Flexible filament friendly: Bowden tube goes right to the gear+bearing set.
- Quick release lever.
- Lightweight: 63g
- Compact: Stepper+square body = the size of a NEMA17 motor.

Known Issues:
- Requires careful assembly, or the back cover may not fit well (aesthe