How it’s made, coins, documentary video

The history of using coins back to about 604 BC and then spread to Greece. The Chinese also use a cheap metals for making coins. And today’s coins are made from

How it’s made, coins, documentary video


21 August 2013 - 6:25 am

Description

The history of using coins back to about 604 BC and then spread to Greece. The Chinese also use a cheap metals for making coins. And today’s coins are made from inexpensive metals like copper and nickel. They pure the silver into the furnace and let the silver then leading the melted silver into this machine and making a continuous bars. Then this machine cut the continuous bars into smaller pieces. after that this powerful machine make sheet from the bar by pressing them under 9 tones of forces. The next steo, this machine agina press them to the exact thickness of the coin.

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