Category Archives: Boat Construction

Readers’ Projects, Issue 56

Craig Bjarnason built an 8dinghy. It is a cold molded, cedar hull with mahogany keelson seats and transom. All the laminating was done with thickened WEST SYSTEM® Epoxy. The hull was sheathed with 6 oz. fiberglass/epoxy on the outside and was epoxy coated on the inside. This boat is used as a tender for our 34cold molded cutter on Lake of the Woods (Kenora, Ontario). It was also built using WEST SYSTEM Epoxy.

Take a look at some of the other awesome Readers’ Projects our fans sent in!

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Bond Girl’s New Custom Rudder Support

By Jenessa Hilger – GBI Marketing

The weekend before our wedding, my husband and I bought our S2 7.9 meter sailboat. She was exactly what we were looking for, a trailerable racer/cruiser that was a diamond in the rough. Over the past nine years, we’ve made many improvements, the latest of which was building a custom fiberglass and carbon fiber rudder support, or as I nicknamed it, a rudder hook. Read on to see how (and why) we made it.

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Calculating Laminate Thickness

By Rachael Geerts – GBI Composite Materials Engineer

Have you ever wondered how laminate thickness can be determined without breaking out the epoxy and reinforcement fabric? The answer is simple—use math. While some of you may have just lost interest because you think math is too difficult, I can assure you that this math requires nothing more than some basic multiplication, addition, and division. Let’s get to it.

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Preparing to Fair

Most of the rudder has been shaded with a pencil, so after longboarding, you can ssee the fairness of the entire surface.

By Greg Bull – GBI Technical Advisor

Those new to the process of fairing a boat’s hull or deck are quick to mix up a batch of fairing compound, WEST SYSTEM® Epoxy with a low-density filler, and apply it to the surface, so they can start sanding right away. My experience in boat repair and construction has taught me the importance of making a fairing plan and selecting the correct materials before any epoxy is mixed.

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Wooden Boat Centre Works Wonders with WEST SYSTEM

By Lorraine Duckworth ATL Composites

Located on the banks of the picturesque Huon River at Franklin, Tasmania, The Wooden Boat Centre is Australia’s only wooden boat building school, creating original masterpieces and restoring heritage vessels while mentoring students from all walks of life.

For the past 30 years, the Wooden Boat Centre has been dedicated to keeping the tradition of hand-made boats alive. Their one year shipwright course, and a variety of shorter courses, give students hands-on experience in both traditional and modern boat building techniques.

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Epoxy safety

Basic Epoxy Safety Practices for DIY Boat Repairs

By Grace Ombry GBI Retiree

Epoxy safety begins with working cleanly. When handling WEST SYSTEM® Epoxy resin and hardener, take steps to keep epoxy out of your eyes and off your skin and clothing. Ventilate your workspace to protect your respiratory system. Minimize the amount of epoxy that gets on your work surface and tools. Regardless of the type of boat repair you have planned, follow these safety practices.

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Epoxy Provisioning for Circumnavigating Antarctica

By ATL Composites

Lisa Blair sailed her 15.25-meter Hick 50 into the record books this year as the fastest, non-stop, solo sailor to circumnavigate Antarctica. The wild, demanding nature of the Southern Ocean required Lisa Blair to ensure her vessel was in the best possible condition before undertaking her voyage. Equally important was provisioning the proper materials and spare parts to cover every kind of repair job on her epic voyage.

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Swim Platform Rebuild

 By Don Gutzmer – GBI Technical Advisor

If your swim platform is experiencing water penetration, a repair or even a rebuild could be in your near future. We’ll show you how to measure the damage, and perform a successful repair that will last for years to come.

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Making Appropriate Structural Reinforcements to Your Boat

By Jeff Wright – GBI Vice President of Technical Services

Before starting on your next fiberglass repair or boat modification, let’s look at some projects that would most-likely require you to make appropriate structural reinforcements to your boat. After all – boats are complicated structures. Sailboats endure multiple loads from the rigging as the shrouds are pulled in tension and the mast is compressed into the hull. Inboard-powered boats must transfer the thrust from the engine mounts into the stringers while outboard and sterndrive boats place substantial loads on the transom. Even the steering wheel at a stand-up helm can undergo high loads when the boat moves fast through large waves — the security of which many go-fast boaters may take for granted. Let’s dive in.

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