Prior to the invention of the end cap machine press, workers were required to manually hammer metal by hand to change its shape. Not only was this physically taxing, but it was also ineffective when performed on hard and strong metals. Around the mid-1800s, however, the steam hammer hammer was developed. Also known as a drop hammer, the steam hammer was essentially an early version of the modern-day machine press. The only difference is that the steam hammer was powered by steam, whereas most modern-day machine presses are powered by hydraulics.
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