Armband tensioner/shortener
thingiverse
This is tensioner/shortener for a phone sports armband. However, it should work for any strap, as the dimensions are configurable parameters in Onshape. The idea is to be able to play Just Dance Now with the phone strapped to my wrist. The STL is for shortening a 55 mm wide, ~2.5 mm thick strap by about 2 cm. Print as is. No supports needed. To improve the XY strength, I set infill to 50%, Rectilinear. Browser userscript for selecting random song and search in the browser in Just Dance Now: https://github.com/thomasa88/justdance-utils/blob/master/README.md
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