This is a cover for a switch or button so that it is not accidentally pressed or turned on. The switch pictured above was printed on a Makerbot Replicator 2 in standard (0.20mm layer height) with 10% infill. The hinge is made from 4-40 machine screws, and although the holes were designed to be free fit, there is a slight bit of thread engagement as the screws go through the hinges. This was designed in Solidworks 2014. Enjoy!