The Liquid Crystal Pro vat body is fabricated from thermally welded 12mm Polypropylene: a tough plastic that is resistant to damage from cleaning chemicals. The top film frame is also Polypropylene. The bottom film frame is 4mm stainless steel and contributes further to the overall strength of the assembled vat. It won’t corrode when exposed to resin, water or cleaning chemicals. The skin of the vat is 100 micron FEP film, providing a flexible, non-stick surface to ensure good release of the printed part from the screen.