Optical shutter / beam block for Thorlabs-style cage mounting

Last crawled date: 6 years, 1 month ago

Inspired by Tjsangster's peep hole cover, I added a Thorlabs-style 30 mm cage mounting so I could use it in an optics lab. It's a nice quick 30 minute print :)
Don't use it to block laser beams without testing it first (with a significant safety margin!), it will absorb the light and get warm and melt. It will work great for protecting sensitive spectrometers and detectors, a simple slit for a microscope lamp, etc...