Canon 55-250MM IS Solar filter holder mount

thingiverse

I'm using half of this cheap solar eclipse filter. I simply cut it in half using scissors. Tested on the EF-S 55-250MM IS (first model). The fit is pretty good, but you may need to shave a little off the two points inside that keep it from falling off, just to make sure it's not too tight of a fit and doesn't damage anything when getting it off. It prints with no supports - simply rotate and lay flat. I'm not sure why it changed the orientation.