Mini Curved Surface Sander

inspire from https://www.thingiverse.com/thing:5845258

I updated the curve surface sander by adding a zigzag on the sandpaper contact surface to improve its stability during sanding and also introduced a mini version of the sander to enable more subtle sanding.

BOM

• mini
  • screw: M2.5 x 8
  • copper nut knurled: M2.5 x 3 x 4
  • gasket: M3 0.5 x 7
• stander
  • screw: M3 x  10
  • copper nut knurled: M3 x 3 x 4.5
  • gasket: M3 0.5 x 7