Thread: Calcedony Prep
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Old 03-10-2018, 12:23 PM
Pete VanderLaan's Avatar
Pete VanderLaan Pete VanderLaan is offline
The Old Gaffer
Join Date: Apr 2002
Location: Chocorua New Hampshire
Posts: 21,933
Pete VanderLaan is on a distinguished road
There is always a temptation that "more is better" in opals. It's not the case. Less is better is really the approach. Just right is better still. Calcedonias in my experience want very little silver, and if the tin gets too high, it will reduce everything in sight and turn dark. It has a lifetime in the pot as well. Atmosphere also matters- nice and neutral.
I don't believe I've ever drilled a pot with metals, at least not since about 1974.
Where are we going and why am I in this basket?
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