Glass Cooling/Drying Rack

The best advice I've found regarding bed adhesion, is to use a 1:10 solution of white glue (PVA) in water, spread onto a glass printbed with a brush, and let it dry using the heated bed. However, there were a few issues with this:

- This works *extremely* well with PLA, it becomes so adhered that if a part has a solid bottom, it can take 10s of kg to separate if the glass is still hot
- As the glass cools and shrinks, the part pops off the glass on its own, however, if still on the printer,