8020 1010 endcap

For use with 8020's 1010 aluminum extrusion profile. Requires you to tap the central hole of the profile for 1/4-20 hardware. It takes a bit of elbow grease, but it's absolutely worth it. For this particular project, the bolts stuck out a little to allow the mounting of a sheet of plexiglass.

It makes use of a sacrificial bridge, the single greatest piece of advice I ever received about 3D printing, courtesy of [Hackaday](https://hackaday.com/2017/10/17/sacrificial-bridge-avoids-3d-printed-s