Silly question but I want to start learning to cast and I have read about Polyester Resin, urethane resin, and urethane plastic....I get the difference between polyester and urethane resins, but what the heck is urethane plastic???
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Silly question but I want to start learning to cast and I have read about Polyester Resin, urethane resin, and urethane plastic....I get the difference between polyester and urethane resins, but what the heck is urethane plastic???
I'm pretty sure that urethane plastic is just regular plastic, like used in injection molding.