ATX power supply cutout, screw down mounting bracket

A mounting bracket for ATX power supplies.
Designed to be minimalistic in its use of material, yet strong enough to stop the power supply slipping and sliding off a working surface. Also designed to fit the smaller build area of a Printrbot Simple Metal (if no skirt used).

Ideal to mount the ATX power supply in vertical orientation and allows for fixings to screw into base board or similar.