Camera filter case

A simple case screw lock for camera filters. The case is specifically tested with 49mm and 67mm Tiffen filters (black mist pro, glimmer glass, UV, polarization). 

• The 49mm case has internal dimensions: diameter 51.5 mm and height 8mm.
• The 67mm case has internal dimensions: diameter 70.5 mm and height 8mm.

The model can be scaled to house other filter sizes/brands. Note though, that it must be scaled uniformly in the XY plane and cannot be scaled “too much" in Z since the screw threads most likely will not work that well if scaled to some insane height. But it should reasonably handle scaling for most normal sized camera filters.