1.   The metal is heated and then pounded into shape.

2.   The material was graphite electrodes, rods used for heating scrap metal into steel.

3.   The metal would be heated until its molecules began to evaporate, spraying through nozzles under gravity.

4.   The objective is to heat the metal so that it melts the solder.

5.   When metal is heated, it first glows red.

6.   When the metal is heated and exposed to alcohol, it absorbs electrons from any alcohol vapors breathed onto it.