Machinery Extremely epic video shows how pencils are made Rob Beschizza

Machinery Industrial machine is very good at kicking out green tomatoes Mark Frauenfelder

Machinery Dangerous farm equipment used to make corn meal Mark Frauenfelder

heavy equipment These giant contraptions can tie up pine trees as tall as 35 feet Andrea James

friction These inertia friction welding videos are sooooo satisfying Andrea James

tractor Hypnotic videos of high-tech tractors Andrea James

Machinery How Machines Work: Zoo Break! – An interactive book of building machinery and moving gears Wink