Bowden Speed Loader

The screw hinge model is much tighter than the filament hinge version and will be more difficult to actuate the hinge. Keep that in mind while deciding which version to choose. It would be impossible to improve on the original creator's description:This uses a bondtech style gear set to push the filament, similar to a Prusa Mk2/Mk3 extruder. Along with a battery, a reed switch, and a mid-RPM gearmotor, it can push or pull rigid filament through a bowden/PTFE tube with ease and quickness. One user has even tested TPU successfully! To use, just line up the filament with the oblique teeth of the gears and clamp down on it. It doesn't matter much how the motor is wired. If it pulls when you want it to push, just flip it over (rotate on long axis). You might need to apply a little extra pressure on the lever arm while using it to prevent the filament from slipping, especially as it gets further along the PTFE. Note that if your filament has multiple kinks in it such as from storing