Final Box to all the construction

[juanstdio]

Main things to consider are:

1. It should have around 1 L capacity, with an extra 500 mL in case of an overflow of distilled water.

2. We are thinking on using a commercial expandable polyurethane foam, to create an optimal environment for thermal insulation. It has better chemical resistance than expanded polystyrene (EPS, telgopor) and better insulation (higher R-value), although we should considered the aging effect that can affect polyurethane R-value over time.

3. This frame is a useful concept of what we want.