Full circle! This is based off the first board I ever made for the DMG103 kit.
Just a common ground DMG board with X and Y pads with drill holes! Just poke a hole through them to the shell, then drill the holes in the shell. From memory, I use 13mm drill bits.
I uploaded my DMG board to PCBWay so you can get them made from there in large quantities. All I ask for is credit, but go wild!
Credit to 32teeth for the eagle footprints.
Here's a quick vid of me explaining these boards.