Polytek EasyFlo Clear Liquid Plastic (3.8 Lbs) EasyFlo Clear Liquid Casting Plastic is a two-part, low-viscosity polyurethane system that cures to a pale, transparent amber color This option is great for color casting applications using PolyColor Dyes or for casting with fillers such as bronze powder to create cold cast bronze objects EasyFlo Clear has a simple mix ratio of 1A:1B by volume, a 2 to 2.5-minute pour time, and a 15 to 30-minute demold time