Auto-Close Hinge for M6 Socket Head Screws

Slightly modified Airald's self-closing hinge to work with M6 socket head screws, and in left and right-hand versions.

Due to shrinkage of the PLA I'm using I scaled up by 2-3%. One other point that was not clear to me at first with the original model is that you can simply use a piece of filament as the hinge pin, and it works very well! Use a soldering iron, heated nailhead, etc to melt each end slightly to flatten it out so it won't fall out. I bet you'll be surprised how strong the resul