Filament Pulley for Rostock 3D Printer

thingiverse

This pulley is designed for 0.5mm Dyneema on a wooden Rostock variation. Secure it to your stepper using two M3 nuts. The inner hole curves around the stepper hole for optimal Dyneema line placement. Initially, the design had an issue with too many windings; however, by utilizing only two windings not passing through the middle hole, excellent tension and a range of 300-400mm in normal use can be achieved.