M4 Bolt Anchor for Extruded Aluminium V-Frame

This works kind of like a drywall anchor. To use, first prime it by screwing your bolt in, before mounting it. It'll make mounting an object easier. Then, after removing the bolt, either squeeze the tabs to push it into the frame, or put it in diagonally and turn it. With the same bolt, screw in whatever object you're mounting. The bolt should lock the anchor in place. I used M4 x 12 bolts to mount my Pi, but your needs may vary.

I tested it using my AnyCubic Kobra Neo, but I think these should work for Ender printers too.

No special settings required to print, these are pretty quick and easy. They shouldn't require supports.