Prusa i3 MK3S PSU/Einsy Frame Brace

Frame braces to stiffen Z axis frame. Intended for printers with the PSU and Einsy board removed for operation in a heated enclosure.

Einsy brace uses 4 M3 screws while the PSU brace uses 2 M3 and 2 M4 screws.

Prints without supports.

Design files can be found in the original blog post at https://0x7d.com/2020/3d-printer-heated-enclosure/.