Website: thingiverse
Author: smatkala
Price: Free Download
File format: .Stl 3d printable
Description:
Cut strips of sandpaper (140x10mm).Insert skrew into washer, then the skrew into the body, then tighten the nutt a little.place each end of the sandpaper strip under the washer and around the body.Hold the body with your fingers on the ends, gently press the body together to pre-tension the sandpaper and tighten the nut