Summary

This is a simple top mount rectangle that will get the job done if you want to build a handwired 40%.

It requires:
10 threaded inserts M2.5
3 M2.5 x 16
3 M2.5 x 8
4 M2.5 x 4

The chip is not secured in any way and you need to mark it where it needs to be when you start soldering. The design has left-right tolerance. After assembling i had no issues with plugging in.

You can z-scale the plate depending on your preference. 2mm is pretty soft.