I know the risks and its my personal project,

Probably you're OK as long as the box is sealed up, right?

But... that box does seal up pretty good. Are you OK for cooling? Might be fun to put a thermometer in the box, seal it all up and run it for a few hours, then open it quick and see what the temperature is.

But you probably thought of all this and don't need me making silly comments about your engineering.

tanstaafl.

"There Ain't No Such Thing As A Free Lunch"