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By Tom Pawlak — GBI Technical Advisor Big Jon (BJ) serves as a reel for retrieving and letting line attached to floating planer boards in and out from a boat while trolling. Planer boards are used to get fishing lures off to the side of the hull so the lures aren’t following directly behind the boat […]
By Matt Assenmacher I teach mechanical engineering at Hartland High School in Hartland, Michigan. As summer approaches, keeping students interested in learning while wrapping up the school year can be a challenging task. My students learn the principles of technical design while guiding through a fun, hands-on, year-end design project.
Useful Facts About WEST SYSTEM Epoxy By Mike Barnard Using gelcoat over WEST SYSTEM It’s a myth that if you plan to gel coat over a repair, you must make the repair with polyester. We’ve used gel coat over epoxy for decades, shown it in our instructional videos on repairing fiberglass boats, and discussed it […]
Male Mold Plug and Composite Shell Construction Techniques By David M. Sianez Ph.D. After many years of pursuing techniques for male mold plug creation and composite shell construction, I’ve developed a method that is inexpensive and fast. It calls for sheets of rigid foam insulation stacked and screwed in multiple layers to achieve the desired […]
By Michael Marquis At the end of the season this year while riding in a local terrain park, I misjudged the approach to a pipe and ended up crashing the nose of my snowboard into the end of the pipe. Fortunately, I was able to ride away from the impact. Later in the day, I […]
