Hey Guys! this is a sanding block. you will need 2 m4 screws between 12-16mm and 2 m4 nuts. As you can see with the exploded view picture you going to need to embed the nuts inside the body. and the cover will just screw in and hold the sanding paper.
The sending paper needs to be cut to these dimensions: 40x220mm.
I made a drawing template that you can just print and cut your sending paper according to it, apparently, you cannot upload pdf files here (common Prusa!) so the drawing is JPG right now. sorry for the bad quality :)
Have fun and share some pictures if you made it!
The author hasn't provided the model origin yet.