I created this to mount a Prusa i3 Mk3 PSU to the side of a LACK table's surface. It may work for the legs as well.

There's 3 versions:

• Centered on the lack table surface
• Flush with the top or bottom of the surface (plus the width of the mount)
• Sitting askew, 1" hanging below the edge which works with some table feet

The PSU slides into the clamps once they're installed.