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Demonstration of copper "flame painting" at the Ozark Folk Center. The noise is a bit soft, but the demonstration is impressive.

Getting a well defined sunburst multi-coloured pattern on oxidized copper. This is an interesting technique because first it puts a thick layer of oxidisation on the copper, then it uses a "reducing" flame in the torch to remove the oxidisation where the flame goes. (A reducing flame is one where the air-hole in the torch is completely closed, so the flame has less air (and thus oxygen) in it.)