This is a remix of the retainer case by tac0man 

This one includes drainholes on the bottom and has a Mortal Kombat logo, as per the specifications of the customer - aka, my 16yr old son.

The body of the retainer case and the hinge mounting is unchanged, so you can print the plain retainer top and match with the bottom with holes, or print my MK top and match with the original bottom without holes. Download the originals from tac0man's post.

Screws and magnets are the same - 6mm X 3mm magnets and 3mm screws. I used nylock nuts so they don't come loose.