The hammers used for forging have a ram weight of between 350 and 1,250 kg. A drop hammer consists of the anvil bed, the ram and the guides (bars). The anvil bed is a steel block which rests on a fixed concrete base. Its weight is about 15 to 20 times the weight of the ram. The lower die block is attached to the anvil bed.
The so-called ram (also a block of steel) with the upper die block on its underside is pulled up between the bars.
The glowing piece of steel is held between the lower die block and the upper die block, now raised approx. 1 to 2 m, and the ram is dropped.
In this way the steel piece is squashed between the upper and lower die blocks into the mould and fills it. As this occurs, the superfluous material is pressed out between the dies and this will later surround the slug as burr.