Tag Archives: G/flex

G/Flex Keel Repair

By Don Gutzmer

Early in March of 2012, a local boat owner called our technical line and asked about repairing his cast iron wing keel with WEST SYSTEM® Epoxy. He asked if a technical advisor would be willing to take a look at the cracks on his keel and recommend the best way to repair it. After looking at the boat I gave the customer a call back and recommended using G/flex® Epoxy. The advantage of G/flex is that it is a toughened system that has a tensile elongation of more than 30 percent, which would prevent cracks from reappearing in the fairing compound. The boat owner then asked if I Continue reading

Improve Wooden Paddles with G/flex

By Tom Pawlak

G/flex epoxies weren’t developed with coating in mind, but early on in applications testing we discovered they were excellent at dealing with impact. This became evident when we used G/flex 650 (the unthickened version) as a coating and when we used G/flex 655 (the thickened version) as a protective buildup.

G/flex 650 is not optimized for use as a coating, but we found it was worth the extra effort it takes to apply to wooden parts that might get dented in service, such as wooden canoe paddles and boat oars. As a coating, G/flex deflects without cracking when the wood beneath it gets dented. Continue reading

Mother of Invention

Spring-loaded wire cutters

By Tom Pawlak

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

What you can do if you don’t want epoxy to stick

By Bruce Niederer

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.

Continue reading

Getting the Most Out of G/flex®

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

Epoxy Compression Test in Progress

Determining Epoxy’s Physical Properties

BY MIKE BARNARD

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

White Oak Redux

White Oak Redux

BY BRUCE NIEDERER AND BILL BERTELSEN

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

A G/flex Modified Snow Shovel

By Tom Pawlak

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

Building Iakos

By Joe Parker

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

White oak and epoxy

So Stands the Mighty Oak

By Bruce Niederer

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.

We’ve been debating the issue of gluing oak ever since. Continue reading