Tag Archives: Don Gutzmer

The completed Chris Craft transom painted with marine bilge paint.

Chris-Craft Transom Repair

By Don Gutzmer — GBI Technical Advisor

Here’s how we recently repaired a rotted Chris-Craft transom. The boat* had rotted stringers, transom, cockpit sole, and other problems common in fiberglass boats. I’ll explain the process we used for replacing the transom to provide some direction on tackling similar projects. Continue reading

Taking the snow sled for a spin

Snow Sled Built with WEST SYSTEM Epoxy

By Don Gutzmer — GBI Technical Advisor

A picture of an Equinox Snowcoach 685 inspired me to build a similar snow sled for my young kids. Growing up in Michigan, I learned to appreciate the outdoors. I remember snowmobiling with my family at a young age and those memories stayed with me as I got older. I still look forward to the few times each year I go up north to trail ride. I want my kids to appreciate snowmobiling as much as I do so, I decided to build an enclosed sled to pull behind my snowmobile. Continue reading

Jon Staudacher’s Approach to Projects

By Don Gutzmer – GBI Technical Advisor

Cover photo: THE ANIMAL alongside one of Jon Staudacher’s other projects, an acrobatic airplane. Photo by Avram Golden.

My good friend and previous employer, Jon Staudacher, always surprises me with how he designs and builds his projects. Jon creates everything from hydroplanes to airplanes using materials and methods that are logical and practical. He would say he treats most of the things he builds like a science project, experimenting with new concepts in design and materials, and continually learning new things. I will explain some of Jon’s unique approaches to a few of his recent projects. Continue reading

which epoxy is recommended? WEST SYSTEM 105 Resin and G-flex epoxies

105 or G/flex?

Take the quiz

By Don Gutzmer – GBI Technical Advisor

“Should I use the 105 System or G/flex® Epoxy for my project?” This is a great question. Here’s what a Technical Advisor thinks about when recommending one type of WEST SYSTEM® Epoxy over another. Let’s start by comparing the handling characteristics and mechanical properties of both the 105 System and G/flex. This will show you the advantages of each and when one system is better suited over another for your project. Continue reading

West System Epoxy

The Basics of WEST SYSTEM Epoxy

By Don Gutzmer – GBI Technical Advisor

For those who want to work with epoxy resin and hardener, each February Gougeon Brothers provides a Fiberglass Boat Repair Class for repair professionals. Here are some of the basic techniques we teach in the class, as well as helpful tips for working with WEST SYSTEM Epoxy.

Epoxy’s Cure Stages

What is the difference between working time, pot life and cure time? All three are slightly different. Continue reading

A scrap of curved fiberglass panel was the perfect piece to extend the nose of the car body to match the new profile.

Building Composite Parts

Using a car body mold to modify a race car demonstrates this approach to building composite parts using different kinds of molds.

By Don Gutzmer – GBI Technical Advisor

Featured image (above): A scrap of curved fiberglass panel was the perfect piece to extend the nose of the car body to match the new profile.

Creating things has been a passion of mine over the years, and I continue to improve my skills and grow more proficient at building composite parts. I also enjoy the challenge of helping others create one-off composite parts. I’m happy to share some of the materials and techniques I’ve used over the years to build composites with WEST SYSTEM Epoxy and provide an example of a recent project. Continue reading

Joining Plywood with epoxy

Joining Plywood

By Don Gutzmer – GBI Technical Advisor

Many boat parts require plywood lengths greater than the standard 8 feet, so joining together two panels of plywood is an important step. The most common methods of joining plywood are the butt joint with backer block, the scarf joint and a hybrid between the two. Each method offers its own distinct advantages and disadvantages in certain applications so it’s important to be aware of each joining method. Continue reading

bibble-free casting

Bubble-Free Casting in Knotholes and Cracks

By Don Gutzmer – GBI Technical Advisor

Customers often ask us to recommend a WEST SYSTEM product for filling cracks and knotholes in wood. The best choice is 105 Resin and 207 Special Clear Hardener. Used properly, this product combination produces a strong, transparent casting. I will use large logs with huge voids to demonstrate the best practices for achieving a clear, bubble-free casting with 105/207. Continue reading