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Preparation
Before trying any of these copper-melting methods, prepare the copper and prepare yourself. The copper should be clean and free of debris, as well as any attached metals or materials that might have different melting points or be dangerous to burn. No matter how you choose to melt copper scrap, always wear gloves and goggles. If you use the stove top or blowtorch method, a mask of some sort would be a good idea, as the copper may "pop" while melting and splatter you with molten metal.
Metal-Melting Furnace
In addition to a metal-melting furnace, you will need a crucible in which to place the copper scrap. After placing the crucible in the furnace, turn the temperature up to or beyond 1,084 degrees Celsius. In minutes, you will see the copper begin to melt. This method enables you to melt larger amounts of copper scrap than is possible with other methods, given the same period of time.
Stove-Top Method
Your stove can actually be used to melt copper scraps. Place the scraps in an iron pan and cover it. Turn the stove top temperature to high and remove the cover to check on your progress every few minutes. Reserve the iron pan for this specific purpose and do not mix it with your normal cooking utensils. Do not try this with a copper pan since it will obviously melt at this high temperature.
Blow Torch Method
You can also use a blow torch to melt the copper scrap. With this method, you will need to place the copper on a brick that can withstand the high heat. Refractory bricks are best for this. However, you will only be able to melt a small amount of copper scrap at at time and you will have to pay for the blow-torch fuel. This good method to use to get accustomed to working with copper at high temperatures.
Warning
Do not melt pennies. It is against the law to destroy legal tender.