Railcore Leadscrew Coupler Cover

This cover protects the based of the z leadscrew and coupler from collecting junk from the bottom of the printer and tidies up the look as well.

Snap-fit between the outside extrusion and the optional base reinforcement extrusions (assuming a 40mm spacing between extrusions). Use template at https://www.thingiverse.com/thing:3561761 for proper installation of reinforcement extrusions.