Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:2026930.

A mount for a generic 12V power supply with tapped M3 holes on the bottom. You will need two mounts.

I use @Tech2c's trick for tee nuts (hammer nuts) -- one side has a slot since you can't preload both sides.

PDF drawing is included so you can compare against your power supply before printing.