6 model

Free

Helical Pen Case

Thingiverse

Free

Helical Linear Bearing LM8UU Replacement

Thingiverse

Free

Helical Wind Turbine

Thingiverse

Free

Printrbot Helical Extruder Gears

Thingiverse

Free

Ultimaker feeder gear mod (double helical)

Thingiverse

Free

HELICAT

Thingiverse