Photography - 52mm filter cap

I designed this filter protector cap so that I can keep the filter on the lens with frequent or intermittent breaks between shots and keep the filter from getting scratched between shots as well as keeping the filter clean from debris, fluids and dust. NOTE** different filters may have different OD outside dimension. My 52mm filter has a 54.34mm OD so I made the ID inside dimension of this protective cap slightly larger at 55mm