About this 3D model

Universal sanding sticks. MODEL A, B, C and a very useful extended handle (custom made on my needs). I have basically improved a lots of different ideas I have seen around. You will need two M4 nuts inserted into the printed knobs and two M4 rods (11-12 mm) to screw into the body. You can add tension to the paper by tighten the knobs. I currently use them in my workshop, I find the very useful, resistant and well designed. All feedback are appreciated! Thanks Fil