5 model

Free

Ring Mandrel, Single Size 0 - 13.5 (US & Canada)

Thingiverse

Free

Spool Winding Mandrel

Thingiverse

Free

Ring/Pen Mandrel

Thingiverse

Free

NEJE (Or Others) MINI Laser Pen Mandrel Rotary Jig

Thingiverse

Free

Filament Mandrels (Rewind)

Thingiverse