The head of soldering takes out the hardness and anneals the metal, leaving it in a soft condition. However if you take the piece of jewelry and put it into an oven set at 360B0C for 60 minutes, th e hardness increases from 190 to 270 Vickers, even harder than if you had hammered or rolled it!
Alan …The quote above is from an earlier message from you
discussing gold alloying.This method of hardening is new to me
and I do have several questions.
1-I don’t understand the oven setting of 360BOC. What does BOC
2-Does the technique apply to Sterling Silver too ? What would
be the temperature and time for this?
3-Is it necessary to flux the piece before heating or is the
temperature too low to be concerned about?
4- How critical is the temperature? or time?