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Polyester Resin for Surfboards
Silmar. The industry standard since 1961.
249A is your laminating resin. 250A is the sanding resin for hot-coats. Both come in standard cure and UV cure, and the UV versions give you infinite work time in the shade then kick in about ten minutes of sunlight. Pints through five-gallon pails. Also here: UV catalyst powder to convert standard resin, surfacing agent to turn lam resin into sanding resin, and styrene monomer for thinning and cheater coats. Poly is for PU blanks only, it will melt EPS.
