Many times each day we get questions about sticking to various substrates. Most questions are on something that we have already tested, so we check our large database and advise on how best adhere to the surface. Other times the request is unique and we are unsure if WEST SYSTEM® Epoxy will stick to it or not. In the event we do not have any experience bonding to a material, we recommend testing adhesion. Many times this means gluing a wood block to the surface, then pulling the Continue reading →
Built in 1957, my 15′ Larson Thunderhawk Jr. is a fiberglass runabout reborn. I launched her into the waters of Grass Lake, in Fox Lake, Illinois in late August 2010. But before this happened, the boat underwent a major restoration. I purchased this boat in August of 2009, after it sat idle for several years, collecting dirt, rainwater, leaves and snow. All that remained was its shell,
I purchased this boat in August of 2009, after it sat idle for several years, collecting dirt, rainwater, leaves and snow. All that remained was its shell, motor, and a rusted trailer. I found a group of Larsen enthusiasts who helped me locate my boat’s original specs, drawings, and
We spend a good amount of time doing everything we can to inform our customers how best to make WEST SYSTEM® epoxy stick to wood, metal, and even plastic, or underwater with the introduction of G/flex 650 and 655. Still, there are many instances when you don’t want the epoxy to stick to one surface or another.
Putting epoxy resin and hardener into a single cartridge was an idea we had years ago, but the technology was never around to do it. Once the technology became available (in the form of a u-TAH chambered cartridge with a mixing wand), we needed to develop a two-part epoxy to go in it.
We chose the characteristics we wanted for this new epoxy: long open time, fast through-cure, full cure overnight, and ability to cure at low temperatures. With these Continue reading →
This article is Lesson 4 of a series. See bottom of page for links to additional articles in this series.—Ed.
The way a finish ages has everything to do with the way it is anchored to the wood. Sealers and primers are often taken for granted; we simply read the can and follow directions. There are so many reasons for using a sealer and many methods for applying them. Let’s look at what we learned while sealing Sparks, the electric launch I built. Continue reading →
By Julie Van Mullekom
Are you the kind of person who just can’t get enough of a good thing? Looking for a better way to squeeze out that last little bit of G/flex adhesive from your tube rather than resorting to pliers, a vise or maybe even Grandma’s rolling pin? Maybe you’d like to get a fatter bead of adhesive or your tube is a bit clogged. Boy do we have the some easy and inexpensive tricks for you! Continue reading →
While WEST SYSTEM® epoxy has a long shelf life, age will eventually affect its handling characteristics and cured strength. When stored for very long periods, hardeners may turn darker (reddish to purple), become thicker and give off more odor. 105 Resin may lose some clarity and also become slightly thicker. Use extra care when mixing age-thickened products (stir extra thoroughly), and if color and/or clarity are crucial to your project, buy some fresh resin and hardener for best results. 207 Special Clear Hardener is specially formulated for clarity and flow. Continue reading →
Over the course of the last couple years Gougeon Brothers Inc. has partnered with Waste Management Inc. to implement a comprehensive recycling program that has been both simple and effective. We are now recycling emptied plastic and metal containers, shrink wrap from bulk packaged items, dispensed adhesive cartridges, cardboard boxes, miscellaneous soft and rigid plastic items, office paper, magazines, etc.
Our customers may also recycle many of the containers and related packaging items Continue reading →
In this article I’ll describe our standards for testing epoxy and how we test epoxy to determine its handling characteristics and cured physical properties.
Testing Standards These are the standards we follow no matter which epoxy we are characterizing.
Two-week room temperature cure After proper metering and thorough mixing epoxy will continue to cure after it has solidified, until all amines have paired up. Over years of testing we have found that two weeks of curing at room temperature, which we define as 72°F (22°C), is a good indication of its full strength.Continue reading →
We consider ourselves students as well as tech advisors and so are always open to learning something from others. Our readers are generally pretty savvy people, and when they take the time to write us a thoughtful letter, we feel compelled to share what we learn from them with the rest of our readers.