Glass bed cooler

## Glass is king
Printing on glass is boss but waiting for prints to pop off on their own takes too long and putting glass in the freezer seems silly to me. So I initially had a 120mm cooling fan on screw standoffs but my fan was plugged in all the time or I had to unplug the wall wart. All of this seemed tedious and ridiculous considering I can print whatever.

### Solution
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Enter glass bed cooler. Simple design that uses a microswitch to activate the fan while the glass bed is on