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Trees and Skateboards

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WikiMedia Commons

A few years ago, I decided to learn to how to skateboard, much to the embarrassment of my then-teenage children. They requested that I go to the skatepark in disguise to avoid being recognized by their friends.

But part of the attraction to learning the skill was telling the young boarders I encountered that their sport is linked to trees.

The first skateboards were just wooden boards with roller skate wheels attached to the bottom. But modern decks — the piece you stand on — are composed of multiple layers of wood veneer made from sugar maple trees that grow at the northern part of their range. The shorter growing seasons there create narrower growth rings and harder wood, which can withstand the inevitable wear and tear a skateboard endures.

The layers are pressed together with polyvinyl glues at a pressure of about 300 pounds per square inch. After curing, routers cut out the final shapes, apply edge trimming, paint them, and send the boards on their way.

And because maple is heavier and is less flexible compared to other tree species, makers often combine lighter woods like birch and bamboo to make the decks easier for boarders to do those nimble carves and turns. Some decks get a top sheet of Hawaiian Koa or rosewood to give the board extra strength and a more responsive ride. Plus, it just looks classy.

You can buy synthetic decks made from epoxy, fiberglass, or carbon-loaded thermoplastic nylon, but they don’t combine the toughness and elasticity that laminated wooden boards provide.

And although I did manage to learn the skateboarding basics all those years ago, I never mastered the freewheeling zoom of real skateboarders. But I can’t blame the board — or the wood. Maybe my kids were right after all; for some things, you just have to be a teenager.

Dr. Nalini Nadkarni is an emeritus professor of both The Evergreen State College and the University of Utah, one of the world’s leading ecologists and a popular science communicator. Dr. Nadkarni’s research and public engagement work is supported by the National Geographic Society and the National Science Foundation. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author and do not necessarily reflect the views of the National Science Foundation. @nalininadkarni
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