In 2011, our Technical Advisors Bruce Niederer and Don Gutzmer were packing tools for a trip to Mystic Seaport where they would once again provide guidance and instruction to families participating in the WoodenBoat Show’s Family Boatbuilding event. They recalled from the previous summer that spring loaded wire cutters were very helpful for removing the twisted copper wire used to temporarily hold stitch and glue boats together after the joints cured. Unfortunately, none of the spring loaded wire cutters could be found.
We took a pair of conventional wire cutters (no spring attached) that we had on hand Continue reading →
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.
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 →
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 →
Building stuff, especially boats, with wood is much like a religious calling; once you hear the call, there’s no turning back. Those who’ve heard the call will not suffer fools willingly, so when I decided to conduct some white oak adhesion and shear testing and report the results in Epoxyworks 31, skeptics and believers alike took to the internet wooden boat forums-and had no problem speaking their minds! Having healed from the pummeling I took in some quarters, I’m back again to report the promised follow-up test results.Continue reading →
This winter (2011) in Bay City, Michigan, we’ve seen a couple big snow falls and lots of small ones with 1″ to 2″ of accumulation. Not enough snow to bother breaking out the snow blower, so I usually shovel it by hand. About 10 years ago I fell in love with the plastic snow shovels that are lightweight and the snow slides off of them easily compared to the metal snow shovels that are heavy and snow clings to stubbornly.
My problem with plastic shovels is they wear out after one or two seasons at best because my driveway is made of fiber reinforced concrete. It is like a huge piece of 80-grit sandpaper waiting to devour my plastic shovels. Continue reading →
We sailors sometimes think of ourselves as adventurers and explorers, self sufficient and capable of handling the vagaries of wind and weather. But our view of voyaging includes refrigeration to keep the food and drink cold, sail handling and navigation systems to make sailing easy and safe, and a good dry, comfortable boat so we remain content while sailing to the ends of our own personal world. When we compare that to the skills and equipment of early voyagers, it can be almost embarrassing. Continue reading →
People have been building boats using white oak for centuries, sacrificing blood, sweat and tears to engineer wonderful and enduring vessels of all shapes and sizes.
Oak was often used because of its desirable properties and behavior. It is dense, strong, rot resistant, holds fasteners well and can be steam bent. In the days before glues and adhesives, oak planking was used because it would swell considerably which resulted in tight and sound hulls, meaning little leaking and dry interiors. Of course, time marches inexorably forward and eventually builders began using adhesives to augment or, in some cases, replace mechanical fasteners.
A local sailor stopped by our shop with an old plastic hatch that was slightly warped and badly cracked. He hadn’t been able to find a similar hatch to replace it. He wondered if we had an epoxy that could be used to repair the hatch. I said G/flex would likely work but to know for sure we needed to do a bit of adhesion testing. Continue reading →
In January of 2015, we stopped offering the the 860 Aluminum Etch Kit in the WEST SYSTEM product line. Before making that decision we ran a series of tests that compared bond strength of 105 Resin/206 Hardener and G/flex 650 Epoxy on aluminum surfaces prepared a variety of ways. As usual, we used the PATTI (Pneumatic Adhesion Tensile Test Instrument) to test adhesion. Continue reading →