What is the difference between a vacuum chamber and a pressure Vacuum Chamber Vs Pressure Pot
(Pressure pots for casting are much, much cheaper, especially if you already have a compressor.) The real reason for desiring silicone rubber in The pressure pot is also a way to get clearer castings, it compresses the contents so much that air bubbles become microscopic and invisible to Vacuum chamber is for stabilizing wood. It sucks all of the air out of it and draws in the resin. Once the chamber stops pulling bubbles, you ...