Canon EOS 30 / 50 / Elan II / Elan 7 film door latch
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Remixed from https://www.thingiverse.com/thing:3271305 Back film door latch for Canon EOS 30 / 50. They tend to break. Replacement part can also be bought for about $10 from china on ebay, but why would anyone with a 3D printer to that ;) I improved upon the design of iscand by reducing useless overhang, and adding built-in supports for the other overhang. It can be easily removed by a knife or tiny chisel, therefore print without supports. The meltable columns for attaching the metal contact brush are not in correct position for EOS 30. I left them in position as designed by iscand, maybe they fit well on EOS 50. I removed them completely with the built-in support, and used extra piece of filament and 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 attach the spring. I filed away the tip of the screw. ### Update 1/2021: the part failed. The hook broke off. PLA seems to be too weak for the kind of stress this part is exposed to. ### Change log ## 2021-11-06 v2 - contains rounded corners to reduce stress on the hook section. - removed built-in support, print with supports for overhangs more than 80 degrees. - instead of 100% infill, I suggest to increase number of walls. It should produce stronger hook section.
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