Canon EOS 30 / 50 / Elan II / Elan 7 film door latch

thingiverse

Remixed from https://www.thingiverse.com/thing:3271305 Back film door latch for Canon EOS 30 / 50. They often break. A replacement part can also be purchased for about $10 from China on eBay, but why would anyone with a 3D printer do that? I enhanced the design of iscand by eliminating unnecessary overhang and adding integrated supports for the other overhang. It can easily be removed using a knife or tiny chisel, so print without supports. The meltable columns for attaching the metal contact brush are not in the correct position for EOS 30. I left them in place as designed by iscand, possibly they fit well on EOS 50. I completely removed them with the integrated support and used an extra piece of filament along with a soldering iron to attach the metal piece. As you can see in the attached pictures, I also drilled a hole 0.9mm and used a 1.3mm screw to secure the spring. I filed away the tip of the screw. UPDATE 1/2021: The part failed. The hook broke off. PLA appears to be too weak for the kind of stress this part is subjected to.