GNS430 sim remixed

This is a slight remix of the GNS430 simulator https://www.thingiverse.com/thing:2723972.

1. The original design uses laser cut hardware mount. This remix includes the same part with some adjustments for 3d printing. I ended up laser cutting the part before I could print this remix, but maybe it would be useful to someone.
2. I could not laser engrave the keycap legends, so I (paper-)printed out and glued the labels instead. Not as pretty, but works. I covered them with nail polish as a protection.