Olympus 35 RC Lens Cap
by arronsmith, published
Replacement lens cap for Olympus 35 RC Rangefinder, because mine kept falling off.
The 35 RC is a rangefinder, and as such can be focussed with the lens cap still attached. Sometimes I am extremely stupid and take photographs without first removing the cap. The rectangular protrusion at the top prevents the focus mechanism from being usable when the lens cap is on by blocking the brightline frame aperture.
The circular protrusion can be drilled to accomodate a lanyard which can be attached to the body of the camera.
The cap grips the lens rim through interference. I printed this with ABS and had to run a couple of copies to compensate for shrinkage during cooling.
I have left the hole in the lanyard protrusion as an exercise for a drill, since my printrbot doesn't resolve small circular holes particularly well.