Mount for Raspberry Pi 3B+ case (detachable)

Printed out the beautiful case design from dktosoch:
https://www.thingiverse.com/thing:2844013

But it has no way of mounting. All other remixes are fixed, so I made this easily detachable mount with a design that would fit the case.

The mount has 0.1 mm overlap for a snug fit. Recommended any M3 screws or smaller.

UPDATE: Since a few users suggested that the mount is too tight, I'm adding a second version without overlap. Now there are two versions, choose the tight one ONLY if you have more flexible filament than general PLA.