2-eye rear bicycle light case

thingiverse

Replacement case for 2-eye bicycle rear light, as on the picture. It is a good light but its attachment to the mounting bracket is weak and easily breaks. This case should solve the problem. The part needs to be printed with precise dimensions, so you may have to account for thermal shrinkage of your filament. I recommend printing with low layer height (like 0.1mm) to get the top smooth. Designed in FreeCAD, source is included.