Taurus PSU relo frame brace for Prusa MK3 and MK3s

I gave this an overhaul and re-branded it Taurus to go with the [Taurus Z axis](https://www.thingiverse.com/thing:3321711) as a next step for relocating the PSU off the frame.

You will need 2 M4x14mm screws and 2 M4 hex nuts. This now uses my extrusion slot-lock system in addition to the t-nuts that the PSU used, for a dual axis clamp. See instruction in Taurus Z for slot-lock install.

Position t-nuts close to holes in brace and use hex wrench through hole to position them closely. Ti