Prusa i3 MK3 frame brace with vitamins

Don't spend hours printing a PSU replacement bracket when you have hardware like angle brackets and nail plates lying around.

Click "View original" on the first picture to see an [animation](https://thingiverse-production-new.s3.amazonaws.com/assets/8a/48/20/84/52/myimage.gif) to get a better idea of what the program does.

It might be painfully slow in the customizer. The customizer doesn't like boolean variables so I am not porting it there yet.

**NO .stl files !!** you probably will n