What the… heck are these figures made of? Clay. These ceramic figures were created by Alma, Michigan sculptor, Curt LaCross. LaCross uses a mixture of WEST SYSTEM® epoxy and clay to assemble and finish large figures that must be fired in pieces.
by Meade Gougeon
One of the little known or understood characteristics of modern fiber- reinforced plastic composites is the loss of some initial stiffness capability after repeated cyclic loading. Loss of stiffness can be significant enough to cause a noticeable effect on performance, depending upon laminate makeup and degree of cyclic loading.
Loss of initial stiffness after repeated cyclic loading was first noticed in several highly competitive racing dinghy classes where older boats that had been sailed hard for Continue reading
By Kay Harley
A research mentality and ongoing testing permeate all levels of Gougeon Brothers, Inc. We are committed to rigorous, long-term research on WEST SYSTEM products and their uses with other materials in wide-ranging applications. Studies include the basic chemistry involved, safety for users and the environment, formulation changes, product modifications such as adding pigments or UV additives, panel strength and stiffness with varying composite lay-ups, and the strengths of epoxy bonds, including hardware bonding. GBI commits capital investments to improve its testing capability and supports active ASTM involvement.
GBI’s testing is an important part of its customer support. Often it is prompted by specific questions or requests from customers. As discussed here, fatigue tests of various composite Continue reading
By Bram Dally
When Meade Gougeon asked me if I’d write a piece about what I’m up to for Epoxyworks, I was honored. He had read the January 2002 article on my single-handed skiff in Sailing World and offered the assistance of GBI (Gougeon Brothers, Inc.) to do some extensive testing for us on several composite samples. The findings will be made public and should be educational. The cedar-cored samples particularly interest me because we’ve had good success using cedar cores and there seems to be a pervasive lack of understanding regarding this composite in high-tech applications. While many high-quality ski and snowboard manufacturers have tried other exotic Continue reading
By Rich Simms, NMSC
Vessels used by the Bureau of Immigration & Customs Enforcement (ICE) can be subjected to severe conditions during law enforcement operations. Occasionally, the intense interaction between law enforcement vessel and suspect violators can result in unwanted vessel damage. The damage on this ICE interceptor was the result of intentional impact by a suspect vessel (Photos 1 and 2). Continue reading
By Tom Pawlak
We recently purchased a 154-piece wood sampler from Eisenbrand Inc., Torrance, California. The 3″ × 6″ × ½” specimens originated from points all around the world. Each specimen was provided with its common name, scientific name, and country of origin. There were several specimens we’ve never heard of.
The PATTI test uses compressed air to pull the stud from the surface. It records the force required to break the bond in pounds per square inch. In all cases tested, the epoxy held and the wood failed. Continue reading
By Tom Pawlak
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 together with a styrene-soluble binder that acts like glue connecting the fibers. The binder is designed to dissolve upon contact with styrene in polyester resin or vinylester resin. Once dissolved, the fabric softens, allowing it to drape around curved shapes. It comes in a variety Continue reading
By Tom Pawlak
We have occasionally reported results of adhesion testing of WEST SYSTEM® epoxy to wood coated with various stains. In Varnish Over Epoxy (Epoxyworks 18), we touched on the topic of wood stains under epoxy and warned that some oil-based stains would cause an adhesion problem for WEST SYSTEM epoxy. Since then, we have done some additional adhesion testing to a number of stains. Continue reading
By Bruce Niederer
We often get asked ‘What can I use to color my epoxy?’ The intended application is as varied as our customers. Often it’s simply to make it easier to paint over or to provide a color indicator between layers. Sometimes it’s to match a particular colored material in a repair. Maybe it’s for an art or craft project. The point is, people are often looking for a color other than the black 423 Graphite, 501 White or 503 Gray Pigments offered in the WEST SYSTEM® product line. What are some options? And what are the pigment’s effects on the performance of the epoxy? Continue reading
By Tom Pawlak
During a recent inspirational hardware store visit, I discovered a rotary wire brush made by Norton™ called the Rapid Strip Brush™. It is used with an electric drill and produces results comparable to bead blasting or a needle scaler. The package says it can be used to abrade metal, masonry and fiberglass. I immediately thought of a fiberglass application that I wanted to try it on. Continue reading