This is uzi's design, I just added another up button and place for aliexpress usb-c breakout board. Also I changed screw holes so you can use bolts with regular nuts (not T-nuts)
3xtop layer (optional)
1xswitchplate
2xmiddle layer
1xbottom plate
Length: 360.68mm
Width: 165.10mm
Height: 21mm
Raspberry Pi Pico
21 mx style switches
21 bjartcaps (can find them here https://github.com/rana-sylvatica/circle-keycaps)
Female usb-c breakout board (https://sl.aliexpress.ru/p?key=bqGpU5M)
Wire
10 m5 25mm screws (https://www.aliexpress.com/item/1005003258556816.html?spm=a2g0o.order_list.0.0.27161802PMt7pe)
10 m5 nuts