I’ve been making and riding cardboard-core surfboards for about three years now. They work. Leaks are not the huge problem you would expect. And they happen to look – what’s that old term the surfers used to use – awesome!
The design files come lain out in 12×24 inch sheets meaning it can be cut on the NYC Resistor laser cutter.
UPDATE: The surfboard was covered by Becky Stern back in June of 2009.