How It's Made S12 E11
Screwdrivers, Compact Track Loaders, Physician Scales, Carbon Fibre Bats

Hardened steel shafts are shaped and fitted with handles to make screwdrivers, diesel engines and hydraulic systems are assembled into compact track loaders, calibrated weighing mechanisms are installed in physician scales, and composite materials are layered and cured into carbon fibre baseball bats.