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Surfboard Fillers & Additives
Dial in your resin for the job
Q-Cel microspheres make a light, easy-sanding putty for dings and fills. Cab-O-Sil fumed silica thickens resin so it stays put on rails and verticals. Milled fiberglass adds real strength for fin boxes and anything load-bearing. Additive F helps epoxy flow out and sand cleaner, and Z-Seal primes EPS blanks before glassing. Works with epoxy or polyester.
