Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4428128.
This is the original model shared by FLSun to build the motor braces. It is needed only if you have not an updated model.
This was not designed by me.
After printing you need to add an M4 hex nut on the underside of the brace and scre the brace with the 2 smaller holes on the top of the motors using the existing NEMA holes. You may need longer M3 screws for this (12mm or 15mm will do).
Then you need to drill 3 holes on the steel lid of the printer, i used a battery drill with an M4 HSS drill bit for metal, it went through like butter. To mark the spot i used a compass, i measured the distance beteen the existing holes and the brace hole and projected the point to drill.
Once done put the lid in place and screw first the braces then the rest of the lid without tightening fully the screws. Once all screws are in place, tighten them all.