Stronger Magnet Holder for CORE One door (remix)

I liked to original remix, but the screw hole was covered up with a 0.2 mm sacrificial bridging layer. Prusa's method is better. So I reimplemented the original Prusa design elements around the hole in the nut pocket. No supports or sacrificial layer to break through.

Remixed the remix to add (back) the original prusa design elements:

• through hole for the screw and 
• the geometry to allow for printing the nut insert cavity around the hole without supports (see red circle in screenshot) or post processing