Sous Vide / PID Temperature Controller Case

_This is 95% finished, and usable as-is, but has a few small warts that could be cleaned up_

Case for a common [PID](https://en.wikipedia.org/wiki/PID_controller) temperature controller used for immersion cooking ([sous vide](https://en.wikipedia.org/wiki/Sous-vide)). Using the parts below, you can create a temperature controlled heating element for maintaining a very tight temperature range on the target system.

This replaces an oxy clean box I'd been using for almost 5 years.

For exam