Environmolds' Pourable Casting Resin is a one to one mix ratio (one part A to one part B by volume) a room-temperature curing urethane casting material that is excellent for casting artwork from either rigid or flexible molds. Simply mix equal amounts of the two components, add the desired amount of filler, and pour into the mold. Gel time is 3 minutes. Demold in 8-15 minutes.The finished cast is bright white in color when completely cured. It may then be sanded, cut, drilled, or bonded. Stain or paint as desired. it's bright white and virtually bubble free and vacuum degassing isn't necessary.