How It's Made S4E9 Car Engines, Flour, Recliners, Envelopes

How It's Made Season 4 Episode 9 Online – Machined blocks, pistons and other components are assembled into automobile engines, grain is cleaned and milled into flour, frames and reclining mechanisms are padded and upholstered to make recliners, and paper is cut, folded and glued into envelopes.