Monthly Archives: December 2014

Number One Chair

Building the Number One Chair

During week long, hands-on classes, renowned furniture maker Michael A. Doerre demonstrates the building techniques he uses to make his original design, the Number One Chair. He teaches students a system of construction and leg seat joinery based on the use of a table saw, band saw, router and simple hand tools. Continue reading

Rebuilding a Rudder

By Barry Duke

What started out to be a relatively easy job of replacing the motor mounts and cutlass bearing on my 1983 Nelson/Marek 36 turned into building a completely new rudder. Once I removed the rudder, I had planned on fairing and applying a WEST SYSTEM® epoxy barrier coat. However, upon closer inspection, I noticed that the rudder appeared to be bent. At one of our Saginaw Bay Community Sailing Continue reading

Bonding Fasteners in High-Density Urethane Foam

By Bruce Niederer

Many of our readers who are familiar with WEST SYSTEM® Brand epoxy products for building and repair already know the benefits of fastener bonding techniques. WEST SYSTEM® epoxy has been used in other industries for many years as well, and these folks apply knowledge and techniques developed in the marine and aerospace industries in their work. A good example is the sign industry, a huge industry in the U.S. with companies ranging from mom & pop garage operations to multimillion-dollar corporations. Continue reading

Effect of Surface Treatment on Adhesion to Metals

By Brian Knight

We have performed tens of thousands of adhesion tests over the years and many of these tests were done on metal surfaces. Below is a summary of tests done on a variety of metal surfaces and done with a variety of surface preparations. As you look at the chart, notice the surface preparation that gives the highest number.

All the tests shown below were performed using a PATTI (pneumatic adhesive tensile test instrument) meter. We chose this test method as our default adhesion Continue reading

WEST SYSTEM Epoxy vs. Polyester for Fiberglass Boat Repair

By Tom Pawlak

Even though we’ve been promoting the use of WEST SYSTEM® epoxy for repairing fiberglass boats (boats made with polyester resin) in our manuals and Epoxyworks for many years, we continue to receive inquiries asking whether it is appropriate to use epoxy for polyester boat repair. Because of the misinformation still prevalent in marinas, local yacht clubs and on the Internet, we felt it was time to restate the case for epoxy. Continue reading

Polyester Over Epoxy

By Jeff Wright

Most production fiberglass boats are made with polyester resin. WEST SYSTEM® epoxy is a wonderful material for repairing polyester fiberglass boats. One reason for this is the ability of epoxy to form a stronger mechanical bond to a damaged laminate than polyester resin. Epoxy also provides a better moisture barrier than polyester resin. Continue reading

Table Top Applications

By Captain James R. Watson

Pouring a thick coating of epoxy onto a table top can produce a unique effect. With a ¼” thick coating, you can cast a variety of objects in the epoxy for decorative accents. Coins, fabrics, sticks of wood, memorabilia and photographs have been used in this decoupage application. Here are a few tricks to make things go more smoothly. Continue reading

The Importance of Stiffness in Small Boat Performance

by Meade Gougeon

Epoxyworks 21

Cover Photo: The SWIFT SOLO is a single-handed skiff built by Bram Dally. Stiff, durable hulls are crucial to skiff speed.

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