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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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work hardening in brass
I have a cast brass foot from an incense boat, (not that it matters, but if
you know what that is, it might give you a better idea of what it looks like), about 2 inches in diameter. It has been dropped numerous times and needs to be straightened. I'm thinking of turning a hardwood female mold as close to the shape as possible, then tapping the rim from the inside out against the mold until the rim is round and true again. BUT I am worried about cracking as I straighten it, as a result of work hardening due to the bending and my rebending. Is this, in fact, a problem with cast brass and if so, how to anneal it? I'm a little leary of just playing the torch on it. Could the kitchen oven be used for this? It can be set as high as 550 F. ? Would that high enough to anneal brass? It's a self cleaning gas oven but I don't have any idea what the temperatures run to in the cleaning cycle but have wondered if that might be useful for this sort of job or even drawing steel. Thoughts? John |
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