1-I don't understand the oven setting of 360BOC. What does
BOC stand for?
It is the computer’s poor translation of the degree symbol which
I typed. It should be 360 degrees centigrade.
2-Does the technique apply to Sterling Silver too ? What
would be the temperature and time for this?
Yes, but it may depend on the exact composition of the alloy
(what the supplier puts in to make it cast better or tarnish
less, etc.) The info I have (and have not tested) is to take
sterling and put it at 750 degrees centig rade for 30 minutes,
followed by immediate quenching and subsequent heating to 300 for
60 minutes. (It melts at 893 degrees centigrade.)
3-Is it necessary to flux the piece before heating or is the
temperature too low to be concerned about?
Good question and I honestly do not know. It cannot nurt and my
guess is that heating silver that high would cause tarnish,
unless a coating of bor ic acid is applied to seal the surface off
from the atmosphere.
4- How critical is the temperature? or time?
Again I cannot say, but I think that if you are within 10
degrees it s hould not make a difference.
The gold was gleened from the World Gold Council’s
Aloy Data Sheets. The silver from Grimwade’s book, Introduction to
Precious Metals. I have not tried this, along with lots of other
things. The theory is wide ly accepted and in practice, it should
work. Please let me know if you try it and what the results are so
that I can tell others.