Parametric Hypercube Evolution Bed Bracket

An attempt at making the bed bracket for the hypercube evolution in openSCAD so it can be parametric.

Turns out my heatbed was a different size, so I needed a 12.5mm bracket or so. Since no one had one, I designed one in openSCAD which meant I might as well make it parametric.

Probably works for 10mm+. Added different options for the T-nut screw size as well, but haven't tested it much.