It all started when I got a tech call from somebody asking if WEST SYSTEM® 105/206 would accept a nail pounded in, after it was cured, with no pilot hole. I confidently said that it would not work well and in most cases cause a fracture in the epoxy. Just for fun, I went out in the shop and tried it because even though every tech advisor agreed it wouldn’t work, nobody had ever actually done it. Well, we were right—the nail caused a “brittle” failure.
Then I saw a 1/8″ thick piece of cured G/flex 650 epoxy sitting on my work bench that I had Continue reading →
Jim Costello of Dallas, Texas, recently asked the Tech Staff about mounting a transducer to the hull of his 1983 Bayliner Capri Classic.
“The user manual for my new Hummingbird fish finder says that the transducer can be installed in the hull with a slow curing epoxy. It says to try to eliminate all bubbles. I have105, 206, 404, and 406 on hand. What if I just mix up some peanut butter thick paste and use that? Or do you have any other suggestions? I can mount the transducer on a part of the hull that is thin enough for the application, according to Hummingbird. Thanks.” Continue reading →
WEST SYSTEM 105 Resin-based epoxy is a very versatile system. For years, experienced users have been blending the various products in countless ways. For example, users may blend 205 Fast Hardener and 206 Slow Hardener to make a hardener with a modified cure speed. Different uses of 410 Microlight® Filler provide a further example. Many customers assume that the only use of 410 is to make a fairing compound—it is added to thicken epoxy to a peanut butter consistency to create a light, easily-sanded filler. However, 410 Microlight can be used in other ways. Jon Staudacher in Epoxyworks 22 described how he applied a “runny” mixture of epoxy and 410 to fill the weave on a composite part and reduce the Continue reading →
Planer boards allow for more fishing lines to be trolled simultaneously and are used to spread lures and harnesses away from the boat when trolling at low speeds (below 2 knots). They are commonly used when fishing for walleye. You can achieve a greater dimensional spread with planer boards than with outriggers. Continue reading →
Keith Tucker creates sculptures on a large scale. Most of his pieces are created for corporate events and the theater. Tucker glues together large blocks of 2 lb weight polystyrene. Tucker says it’s quite dense and retains detail well. Continue reading →
Cover Photo: Brothers Meade & Jan Gougeon aboard their power catamarans with Dick Newick-designed hulls — GOUGMARAN and MAGIC CARPET.
In 2003, my brother Jan and I began talking about building a motorboat. This would be a first for the brothers, who up to this point have focused all our efforts on sailboats. Just a few years ago, it would have been inconceivable that we would ever take up power boating. But time and circumstances change one’s views, especially as we enter our senior years. We have always regretted that major parts of our home waters, the Saginaw Bay of Lake Huron, Michigan, have been too shallow for our sailboats. Some of the most attractive parts of the Bay with the best wildlife have been off limits to boats that draw more than 18 inches. Continue reading →
I get mad at my computer fairly often these days when it takes more than a few seconds to open a file from an obscure site on the other side of the planet. Who has that kind of time to waste? Don’t even ask about photo files. There’s no point in arguing about it—we live in an accelerated world. We hate waiting for anything. Putting the social implications of this aside, a business involved in technical applications and products cannot afford to wait for real time field test results. We need data and we need it yesterday!
The focus of this article on accelerated testing will be how we test the ability of a coating applied in a relatively thin film to resist water transmission. This test is called Moisture Exclusion Effectiveness (MEE). It is based on a method developed by the Continue reading →
Meade Gougeon installed the original hatches on his Gougmaran, but he wasn’t convinced he had selected the ideal locations. Prior to installation he thought about how difficult it would be to remove and relocate them if he used one of the flexible adhesive/ sealants made for this purpose. There had to be a better way, one that would allow hardware to be easily removed yet seal out water. Continue reading →
G/flex Epoxy is a toughened, resilient two-part epoxy engineered for a superior grip to metals, plastics, glass, masonry, fiberglass, and wet and difficult-to-bond woods. Introduced in June 2007, G/flex Epoxy is currently available in two consistencies: G/flex 650 Epoxy, a liquid epoxy, and G/flex 655 Epoxy Adhesive, a pre-thickened epoxy. Both have a 1:1 mix ratio.
G/flex Epoxy gives you 46 minute pot life and a long open or working time of 75 minutes at room temperature. It will reach an initial cure in 3–4 hours and a workable cure in 7–10 hours. Wait 24 hours before subjecting joints to high loads. Continue reading →
The Technical Staff at Gougeon Brothers, Inc. regularly discuss material properties in a variety of applications. For example, it is not uncommon for us to discuss with a customer how to use carbon fiber to stiffen a structure, such as the shaft of a kayak paddle, and then within minutes discuss with another how to bond a dimensionally unstable wood, such as oak, and ensure precautions are taken so that the relative movement of the wood will not cause a failure.
For the kayak paddle, the customer’s concern is that the epoxy will allow the stiff carbon fiber fabric to be as rigid as possible. For bonding the unstable wood, the Continue reading →