16 year - old Marco Facciola built this completely wooden bicycle for a school labor , managing to head off using any metal at all . Yes , this wooden wheeled wonder even has a mountain chain and geartrain made of wood , held together with wooden joint and gum . The detail in the free - wheeling ratch and spacers between the string links , pin with tiny dowel pin , is awe-inspiring . Marco had to discharge this as a non - academic project for his International Baccalaureate , and inspiration came from his grandfather , forced to make wooden wheels for his wheel during the war due to rubber famine . [ LeeValleyviaNeatorama ]
high school
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