by Tom Pawlak — GBI Technical Advisor

Above: Three 8″ plywood supports isolate the mold from the mold strongback.

Back in the 1980s, Gougeon Brothers, Inc. was one of the largest producers of wind turbine blades in the US. The blades were built of wood veneer and epoxy, and varied in length from 10′ to 70′. They were built in halves and vacuum laminated in female molds built with WEST SYSTEM® Brand Epoxy. Tolerances were tight, and every aspect of the tooling was critical, from molding to assembly. If something wasn’t right when the two halves were glued together, there wasn’t much you could do to make it right later. Continue reading →