I designed this model to upgrade my Waka60 kit from mechwild to give it a more premium experience compared to the sandwich case kit it comes with. The case has a slight angle to it, measures about 20mm at its highest point, and re-uses the top plate from the original kit.

Case can easily printed it both 0.4 and 0.6 mm nozzles. Mine is printed with fuzzy skin to give it a more interesting surface finish.

The case lines up with the screw holes in the original case. The 3D prints holes are small enough that you can screw the original kits screw directly into the plastic. You can make the holes bigger (either in the STL or with a drill if you don't want to edit it :)) to add heat inserts if you want. I haven't had issues with mine though.