Tag Archives: Balsa

Measuring the 4 core replacement samples.

Balsa Core Alternatives

By Greg Bull—GBI Technical Advisor

When you need to repair your fiberglass boat’s balsa core but don’t have any replacement core material on hand, what can you use as an alternative? I tested some different replacement core options to see how they’d perform in flexibility and strength alongside original balsa core in a fiberglass laminate. Continue reading

Gougeon 12.3 canoes on display.

The Gougeon 12.3 Canoe

By Tom Pawlak — GBI Technical Advisor
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Cover Photo: A small sampling of the Gougeon 12.3 canoe family. Robert Monroe’s cold-molded canoe (foreground) came from a half-mold that eventually resulted in the a 12.3 mold (object directly behind first canoe) which has been used since 1989 to produce dozens of offspring that reflect a wide raged of tastes and technology.

Above: The latest generation of employees and their Gougeon 12.3 canoes.Building a Gougeon 12.3 has become a rite of passage for new employees. 

The Gougeon 12.3 canoe represents several decades of experimentation by employees of Gougeon Brothers, Inc. Dozens have been built but no two are exactly alike. The evolution of the Gougeon 12.3 parallels our love of boating, passion for innovation and desire to build better boats—all of which contribute to the products we produce today.

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Comparing Cost and Weight of Flat Panels

How to choose the best materials when building flat panels

by Jeff Wright — Vice President of Technical Services

Above: Jeff Wright, Vice President of GBI Technical Services, poised to take a deep dive into types, materials, costs, weight, and stiffness of flat panels.

Many WEST SYSTEM® customers appreciate the benefits of cored composite construction. They understand that it creates a part that is lightweight, strong, and stiff. We often receive calls from these customers inquiring about using a composite panel when building or repairing something that would normally be made of plywood. Such projects may include a new center console for a fishing boat or the replacement of flying bridge side shields. Determining the best material requires consideration of many aspects of the project, but often comes down to cost versus weight. Continue reading

Replacing Damaged Balsa Core

By Bruce Niederer — GBI Technical Advisor

Above: Surprisingly, much of the damaged balsa core on TRIPLE THREAT was well bonded to the glass skin, as it was to this section of skin around the chainplate. The bad core that didn’t come out with the glass skin was removed with a chisel.

I love my boat. I love to spend time with it-sailing it, working on it, improving it.

I think I need my head examined. Continue reading

mounting a cleat

Repair Tips: Backer Plates & Mounting Cleats

By Jerry Cronan

Putting a backer plate in an inaccessible area

Here is how I fixed an unwanted hole in the transom of a foam-filled boat.

  1. I drilled a ½” diameter hole on each side of the unwanted hole,then used a saber saw to connect the holes to form a slot.
  2. Next, I cut 4mm thick plywood into a football-shaped backer plat that would fit through the slot the narrow way. I attached strings to the plate, coated it with epoxy then slipped it through the slot.
  3. Using the strings, I turned the plate so that it covered the three holes and the slot. Reference marks on the plate helped me get it in the right position.

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