How do you make foam? Answered
I'm trying to figure out how to make a surfboard without sanding down a foam blank, because blanks are expensive and I'd much rather pour something into a mold shaped like a surfboard. I don't want to have to buy the kits to pour foam because they're also pretty expensive for the scale that I'm talking about. I guess what I'm really asking is how do you make the two liquids that are in the kits to pour your own foam?