Bob Cassette Rewinder case

This is a case for the [BOB Cassette rewinder board created by dekuNukem](https://github.com/dekuNukem/bob_cassette_rewinder).

This case can be printed without supports with a 0.4 or 0.6 nozzle, however the case text is more legible with 0.4 nozzle.

The alignment shim is optional, but useful for ensuring that you have mated the board to the cassette in the correct orientation.

The parts should press fit together, however depending on the accuracy of your printers tolerances, a dab of glue may be required.