Virgin pure copper sheeting is utilized. Remove the tape. Draw required shapes to cut onto a copper sheet with pencil or a sharpie marker. Use snips (Large scissor). Apply heat to copper with a torch, it starts to change color, turning different shades of bright red, purple and blue. Copper changes colors because of surface oxidation. As it is heated, a layer of black copper oxide will form, thus changing its color. As the temperature increases, the oxide layer will get thicker. The copper needs to be softened in order to form it into bowls or any other shape. This process makes shaping the metal possible with hand tools and is called annealing. The process is similar to Ancient Egyptians technique used centuries ago
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