Sandpaper holder [Shuttlecraft]

cults3d

I designed this sandpaper holder a while ago, and after a year of intensive usage, it deserves to be shared among the 3D community. It is a robust model, designed for different density of sandpapers. You can orient the sandpaper in portrait or landscape (see attached pictures). I have tested many designs, but this one with a threaded bolt and a nut fits me best. Once the sandpaper is wrapped around the base, the nut needs to be tightened lightly. To unscrew it, push the holder down and unscrew the nut. A drop of oil at the bottom of the nut also does the trick. Any resemblance to Star Trek Shuttlecraft is purely coincidental. There are two models: 50mm x 70mm and 60mm x 100mm designed in Fusion 360. If you want different dimensions, you can change LENGTH and WIDTH parameters in fusion360 (see attached parameters) or scale up the STL model. Here are public links to both models - 50x70: https://a360.co/2K54Mfy, 60x100: https://a360.co/2KkeREO. UPDATE July 2018 I tried printing (the Base) with 10% infill and 0.9mm wall thickness to speed up a print but both attempts failed. The bolt didn't have enough structural integrity to withstand my abuse. Therefore, I slightly changed the design of the base. Now the threaded bolt has a 3mm hole in the center. This way, the center's wall adds some additional strength to the model.