With an oxy-butane welding torch it is easy to melt coins.

10, 20 and 50 cent of euro coins are made of nordic gold, and alloy made of: 89% copper, 5% aluminium, 5% zinc, and 1% tin. I melt two of these 10 cent coins with an oxi-butane torch. The problem is oxidation. I will try to solve the problem with borax and or boric acid.

en.wikipedia.org/wiki/Nordic_Gold
en.wikipedia.org/wiki/coin
en.wikipedia.org/wiki/money
en.wikipedia.org/wiki/Oxy-fuel_welding_and_cutting

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