A lens hood for the cheap Fujian 35mm F1.7 C-mount CCTV lenses that are fun to use on APS-C and micro-4/3 cameras.
These lenses suffer horribly if there's a bright light just out of shot, so I made this hood to keep as much of it out as possible.
v1.2 added which chamfers off the outside edge of the round part.
0.2mm layer, 0.4mm nozzle
There are 4 pips in the bit that fits onto the end of the lens, you may need to sand these a bit if it's too tight (see video).