Why are modern surfboards made of foam not wood?
A. In the late 1940s factories made many petrol-chemical compounds commercially available after research and application during the Second World War. In the 1970s foam surfboard blanks were used extensively as these chemicals became more readily available in the US than balsa, the uniform consistency could fill moulds mechanically to bring supply up to demand, achieving more profit and a height of surfboard manufacturing unheard of before.
