The phase diagram shows that the melting point of each of the pure elements is a unique value: 1357 K for copper and 1728 K for nickel ... For any other composition the alloy has a range of melting ...

In a new twist, [Rulof Maker] strips all that out and uses just the metal case to make a furnace for melting aluminum, copper and bronze. His heat source is a quartet of 110 volt, 450 watt ...

The copper-melting technique created by Zhu in 2006 ... which had been liquefied by the high temperatures, flowed freely on the ground, forming crystals of fused copper in a variety of shapes ...