drop forge
drop hammer
drop press

When this cone of almost pure gold cools, it is placed in a die under a heavy drop hammer.

The drop hammers thumped, all in a row, powered by the big ox treadmill.

This can happen in a long, unsupported column (rod) used as a drop hammer.

The Swindon works included a rolling mill and generated power mainly from coal, although its drop hammer was driven by a large water wheel.

The crowd destroyed a former Navy guard-house and military trucks with drop hammers.

A 50-horsepower steam engine provided power for the drop hammers and other equipment.

That thousand-ton cylinder was now hanging fifty feet above Nelson's head, like the business end of a mammoth drop hammer.

However, she was capable of doing many improvements to the ironworks, e.g. she installed a drop hammer in 1810.

This also means that the deformed material becomes hotter the higher the speed of the drop hammer.

The concrete plug is driven into the ground by the drop hammer.