4 model

Free

Concave Sandpaper Tool (For Sanding Belt)

Thingiverse

Free

30 & 40 mm Concave honeycomb fan grill.

Thingiverse

Free

Sandingblock with angled clamp and Concave/Convex/flat system

Thingiverse

Free

Kid Sized Fidget Spinner with Concave Caps

Thingiverse