rtbcomp
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You're referring to heating? Annealing is the combination of heating and cooling.
Copper will anneal if you heat it (cherry red) and let it cool slowly or quench it in water.
You're referring to heating? Annealing is the combination of heating and cooling.
Why not drill the hole out???
The hole in the brass the OP shows us a photo of....Doesn't look to be a lot of 'meat' left on the part to allow for enlarging the hole?
Copper will anneal if you heat it (cherry red) and let it cool slowly or quench it in water.