This is an episode of How its made - Kitchen knives, we will watch how the manufacturer make the knife starting with a sheet of steel.
1- The steel sheet run through a hydrolic presser with a 110 tons of pressure to cut a knife like shape out of the sheet.
2- The blade cut-outs goes into a furnace, the temperture is 843c for two hours, this hardness the steel.
3- The blade cool at -49c using liquid hydrogen for two hours, to form cool hard steel.
4- A grinder smooths the back of the blade (spine) and remove any steel shards.
5- A grinding machine forms the cutting edge with the help of water to keep the blade cool.
6- A laser burns the brand name on the side of the blade.
7- A router shaps the wooden handle.
8- A worker clamps the blade into the handle using rivets.
9- A finale grind to remove any protruding steel from the handle.
10- A finale last grind to insure the blade is very sharp.
