I didnt have any m3 screws to mount my usb controller for my racing sim handbrake, so i made this.
It is designed to hold the controller in place and keep the solder points from touching the bottom. Its has a hole out of the back to feed the usb through; however, i did not make wholes for the button wires because i only need one and you may need more. So i would open in tinkercad and add holes where needed. i may fix that in a future update.

Anet A8

Doesn't Matter

No

.1 or .2

100% on the bottom because the pins are fragile.