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Old 2022-03-20, 3:16pm
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echeveria echeveria is offline
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Join Date: Aug 31, 2006
Location: Knoxville, TN
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Quote:
Originally Posted by phentron View Post
Thanks Kathy,
878F converts to 470C, my data base (compiled many years ago) gives a range 493 - 520C, I am therefore in error & will correct my data base.

I don't have a reference where my figure came from. It is possible that Effetre (with the increase in science technology) re-measured the annealing temp to be the lower value. Years ago, annealing temp was not measured scientifically, but determined subjectively & difficult to tell when the glass was 'fully annealed'.

Peter
I think there is a lot of info out there that is wrong, but perpetuated in print and person to person. Bullseye also has a tech paper on annealing their glass, but I don’t have it handy. Double Helix recommends temps lower than 920 to retain effects in their 104 silver glass. I like to try to go to the mfg source now that I know the “conventional wisdom” is not always right! Or at least not right any longer.
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