3D Touch (BFB) USB Port Dust Cover

A cover for the exposed electronics on the small USB interface PC board on the 3D Touch printer. It just snaps into place and is held by friction, mostly. It could be modified (.SLDPRT file included) to have real snap fittings, but it stays in place the way it is, so I'm happy with it. Without it, there are bare conductors from the ribbon cable connector on the USB PC board that are exposed. If anything metalic accidentally fell in there it would easily short something to something else. This sh