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Old 04-10-2019, 09:28 PM
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Franklin Sankar Franklin Sankar is offline
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Why that working temperature

I started to reduce the furnace temperature gradually over the last year because felt that if the melted glass was still viscous at the lower temperatures that was ok. Then I forgot I reduced the temperature and started to get all kinds of problems.
So the question is how did you choose the working temperature for your furnace.
I noticed some people would have one temp and others another.

Franklin
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Old 04-11-2019, 08:16 AM
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Pete VanderLaan Pete VanderLaan is offline
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you tool up for what you are making.
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Old 04-11-2019, 09:38 AM
Eben Horton Eben Horton is offline
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The hotter the glass the smaller your gathers. The colder the glass the bigger the gathers can be but it comes at a cost of working time and the possibility of bubbles forming from your gather tails folding over them selves.

I usually keep my furnace at 1970 when I am working. The defecto working temp at most schools and public access studios is 2100 which I think is too hot for production.
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Old 04-11-2019, 10:11 AM
Shawn Everette Shawn Everette is online now
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I agree with Eben, it's more a matter of preference. I keep mine about 2100 in general, but I actually like doing my production session after a fresh charge while it's still piping hot. I like sloppy bits that need no reheat.

What you are actually batching is going to have a pretty drastic change on ideal fining and working temp.

You can gauge temp with either a controller or pyrometer, or go old school and tell by color. You'll get the eye for color eventually either way.
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Old 04-11-2019, 08:10 PM
Art Freas Art Freas is online now
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We are working with the Cristalica and initially we tried 2100 but it was just too thick to get the gathers we wanted. It was hard to get the right amount to work thin without taking a lot off the pipe. We now work at 2125.
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Old 04-11-2019, 09:08 PM
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My Wire elements won’t like 2100. It is interesting that 25 deg. makes such a difference in gathering.
Franklin
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Old 04-12-2019, 08:51 AM
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Pete VanderLaan Pete VanderLaan is offline
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Quote:
Originally Posted by Art Freas View Post
We are working with the Cristalica and initially we tried 2100 but it was just too thick to get the gathers we wanted. It was hard to get the right amount to work thin without taking a lot off the pipe. We now work at 2125.
****
That's what I meant when I said you tool up for what you are making. Efficiency keeps you from being exhausted. Sometimes you can turn it down, sometimes up. That's far more flexible than most tooling in the shop.
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