Wire and spring makers do some quite-interesting work. Ace Wire Spring & Form Inc., for example, regularly turns thick wire into specialty hooks using a complex, multistep production process.
The process begins with bending the wire into 5-centimeter hooks and moving them as bulk material into bins. After this, each hook is inserted into a press that forms the ends and drops them into a bin. These hooks are then brought to another station where a bead is placed on each hook end, and both are pressed together with a spring. The final product is a swivel hook extension spring that is used as a tensioning spring for fan belt pulleys.