S21E8: Aluminum Canoes, Wooden Stave Bowls, Wheelchair Accessible Vans, Marimbas

Sheets of aluminum are formed and joined around supporting ribs to create lightweight canoes. Angled wooden staves are glued into hollow forms and turned into bowls; vans receive lowered floors, ramps and other accessibility equipment; and carefully selected wooden bars are cut, tuned and mounted above resonators to produce marimbas.