Flsun Cube SKR v1.3 Box Small

Small version of the SKR v1.3 box i designed yesterday. The magic happens on top of the box. One can place 2x standart mosfet boards on top. There is also a lid wich holds 3.

Also added 2 versions of the lids with just the holes. More easy to print but you goto use
your own spacers under the mosfets there.