A 3d Printable Ergodox case.
You will want to use supports on the bottom segments to allow the screw holes and indents for the feet to print properly. The tops and Plates do not need any support. Print everything with the flat surface down.
PLA would be the best option to avoid warping as the parts are quite large.
Filling and sanding will provide the best look and some parts may need to be sanded to fit together properly.
To ensure that the plate comes out the proper thickness you should do the first layer at .3mm and the rest at .2mm. There are chamfers in place to avoid issues with "elephant foot" in the switch holes but it might not hurt to clean them up with a needle file.
It can be printed on a maker select v2, you just need to go into the epprom with repetier host or similar and change the y max to ~215mm to provide enough room, It will get close to the edge but it will fit.
To complete the assembly you will need some M3 threaded brass inserts, I recommend these as others may be to large:
16 m3x6mm bolt socket head screws
10 self adhesive rubber feet
And the necessary components for an ergodox. PCB, diodes, switches, ect.
Simply insert the threaded inserts into the holes in the top sections using a soldering iron to melt them in, you may want to insert them a bit further than flush to insure they stay secure.
Use the plate as normal, you may have to sand it to get it to fit together nicely.
Screw it together and then attach the feet.
TO resolve wobble, one of the feet may need to be attached with hot glue. Just put a blob under one of the corner feet and then place it gently on a flat surface making sure it sits level. The glue will act as a spacer and lift the foot to level the keyboard and remove any wobble.
A lot of trail and error, and about 2 KG of wasted filament on prototypes.