S14E12: Air Boats, Onions, 3D Metal Printing, Curved Cabinet Doors

A flat-bottomed hull, powerful engine, large propeller and protective cage are combined to build an airboat capable of crossing shallow water and marshland. Onions are harvested, cured, graded and packed; metal powder is fused layer by layer from a digital design; and glued layers of wood are pressed over shaped forms to produce curved cabinet doors.