1L Pot Lid

Lid for a 1L backpacking pot, milled on a [BoXZY](http://www.boxzy.com/) from 1/4 inch aluminum. The center insert was printed in a [thermochromic filament](http://thrinter.com/walters-filament-collection-abs/#reprapper-green-yellow), which works as an early indicator that the water is about to reach boiling, at least when used in colder temperatures.