Annealing Copper Sheet Gas Torch

When you anneal copper it expands and becomes soft and pliable thus giving you a seal once the copper has been compressed.

Annealing copper sheet gas torch. Annealing is a method of softening metal that has been hardened by one method or another. If all you want to do is color the copper a small torch will likely do the job but you are not likely to be able to actualy anneal any signifiacnt size piece. If you hold the flame much closer to the copper you ll burn the metal s relatively delicate surface. Having some trouble annealing copper sheet using mapp gas torch.

I have a feeling the piece is just too large to get it to cherry red within a reasonable amount of time. The torch head is a pencil tip and i am using mapp gas. Hold the flame farther than 4 5 inches 10 13 cm away and the copper will take a long time to heat. Anneal bend a little anneal again bend a little and repeat.

I usually use a bernzomatic mapp gas torch and heat the entire copper gasket until its cherry red then quickly dump it in a bucket of cold water to quench it. Point the flame directly at the copper band or pipe. You should have a form to bend it against. Hold the flame 3 4 in 7 6 10 2 cm from the copper you re annealing.

I m working on a chasing and repousse project and i m attempting to anneal a copper sheet that i think is about 6x6. So long as you get the copper red hot then let it cool it will bend. If your torch cannot get the entire gasket cherry red all at the same time it will be fine. Connect the torch head to the oxygen and acetylene tanks using the torch hoses.

Propane will work fine to anneal the copper pipe you will have to anneal several times while you try to bend it. Copper is one of the metals that hardens when it is worked bent stretched.