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by Jeff Wright — Vice President of Technical Services Most production fiberglass boats are made with polyester resin, and we’re often asked if it’s appropriate to use polyester gelcoat over epoxy. WEST SYSTEM® epoxy is a wonderful material for repairing polyester fiberglass boats. One reason for this is the ability of epoxy to form a […]
by Captain James R. Watson—GBI Technical Advisor Above: A handle trick when you want to cast an epoxy tabletop is to warm epoxy resin and hardener to 80° F to reduce viscosity, then let it pour from a puncture in your mixing cup. These steps will eliminate most bubbles behind. Pouring a thick coating of […]
Woods of the World Epoxy Adhesion Testing by Tom Pawlak — GBI Technical Advisor Above: Epoxy’s adhesion to wood is the focus of this study of dozens of wood varieties from Africa and the Philippines. We recently purchased a 154-piece wood sampler from Eisenbrand Inc., Torrance, California. The 3″ × 6″ × ½” specimens originated […]
by Tom Pawlak — GBI Technical Advisor Above: Wet-out chopped strand mat and woven fabric test samples are prepared for moisture uptake testing. Chopped strand mat, in fabric form, is sold on the roll and in small folded packages. It is made up of 1″-2″ long fiberglass strands that are randomly oriented and typically held […]
by Tom Pawlak — GBI Technical Advisor Above: Testing of epoxy adhesion over stains was done with a number of different stains. We have occasionally reported results of adhesion testing of WEST SYSTEM® epoxy to wood coated with various stains. In “Varnish Over Epoxy,” we touched on the topic of wood stains under epoxy and […]
