Parametric Camera Lens Caps

I found a number of lenses recently that did not come with their lens caps. The most problematic was a fisheye lens where the glass stuck out from the body of the lens so was particularly vulnerable.

I made a Blender 2.79 script to generate lens caps for them, including the ability to have relief for the lens glass in front of a sleeve that pushes up against the front of the lens body.

The CLEARANCE parameter can be set to suit your printer and filament; 0.1mm worked for my Prusa printer using MatterHackers TPE flexible filament, providing a snug fit without being too hard to slide on and off.

I also include the STL files for the particular settings found in the Blender script to give an idea of the kind of caps that worked for my particular lenses. I used calipers to measure the outer lens diameter in millimeters and set the WIDTH parameter to that. The INNER_WIDTH should be less and for fisheye lenses it should clear the lens but also sit against the edge of the lens body