There are over 260 billion beverage cans being produced every year worldwide. The United Kingdom is one of the leading markets with over 8.2 billion (steel and aluminium) cans being produced.
A single production line can make up to 500 million cans every year from coils of aluminium or steel. The main procedure to form the body of the can is done in one continuous punch stroke by a 'Bodymaker' in about one fifth of a second.
The Bodymaker punch is made from an extremely heavy hardmetal alloy, to withstand high forces and conditions which would wear away most metals very quickly. However, the punch weight causes problems of vibration and alignment because of the speed with which it has to move, so in order to keep the can dimensions consistent, they need to be removed regularly for maintenance.