S29E8: Flying Water Bikes, Throttle Position Sensors, Cinnamon Cordial, Handmade Rasps

Lightweight frames, pedal-driven propulsion systems and hydrodynamic supports are assembled into water bikes designed to rise above the surface as they gain speed. Electronic sensing elements are calibrated inside throttle-position sensors; cinnamon is infused into a sweetened spirit before filtering and bottling; and steel blanks receive individually raised cutting teeth before being hardened and fitted with handles as handmade rasps.