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Old 09-05-2019, 08:09 AM
Victor Chiarizia Victor Chiarizia is offline
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to heat up or not to reheat

here's a pic of my frozen crucible with ~ 1/2 full of glass. think i can ramp it up or will it crack. pete gave a few pointers but what say youz guys.
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Old 09-05-2019, 08:33 AM
Tom Fuhrman Tom Fuhrman is offline
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go very slow and go for it.
Nothing ventured, nothing gained.
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Old 09-05-2019, 09:07 AM
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I would double the time in the startup program till you are safely past quartz inversion (1063f). I would add a buffer and keep it slow until after 1150f.
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Old 09-05-2019, 10:27 AM
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First, I would listen to Pete...
If you don't heat it up, your option is to break it out? Not a good choice.
25 degrees/ hour to 950. Soak for 6 hours. Up to 1100 at 25 degrees/ hour. Soak for 6 hours. Up to 1500 at 25 degrees/hour. Once the lip starts to glow, you can take it up to 2100 or whatever you melt at a little faster 100 degrees/hour.
Good luck!
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Old 09-05-2019, 10:48 AM
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I had given advice on reheating the pot but I had not seen it. That's a very experienced pot in my mind and I would replace it based on the intense pitting on the inside. I think you need to look at the total time lost pampering it while coming up along with the time that will be lost if it does break and the time spent cleaning out the furnace from that potential break. Even if it survives, the long term prognosis looks unlikely.

Based on how long it has taken you to get to this point, I imagine that the need for the furnace is not paramount.

Vic, did the straps arrive?
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Old 09-05-2019, 11:42 AM
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Am I the only one confused by the pitting on the outside of the pot?
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Old 09-05-2019, 12:24 PM
Eben Horton Eben Horton is offline
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Donít do it Vic. Ask me how I know.
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Old 09-05-2019, 02:43 PM
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Quote:
Originally Posted by Scott Novota View Post
Am I the only one confused by the pitting on the outside of the pot?
****
I think it to just be slop. It's more a build up than pits. It's a really old pot.
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Old 09-05-2019, 04:01 PM
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crucible

That looks like way past the point at which I replace a crucible. Since it's cold it's time for a new pot. (Unless you have no production needs or pressure to make anything)
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Old 09-05-2019, 04:13 PM
Victor Chiarizia Victor Chiarizia is offline
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this is a good crucible in my mind! petes right....the time to baby it up on a gamble it will survive? i'm liking not being hot. i'm renting time a a couple studios and saving a ton of money. i just have to get use to the new studios. funny how you take you own equipment for granted. saved $400 in 3 weeks in electric bills. so i may not keep my furnace running any more. we'll see how this plays out.
btw,,,i only blow 1-2 days a week now. vic
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Old 09-05-2019, 04:52 PM
Eben Horton Eben Horton is offline
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This will be you.....
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Old 09-05-2019, 07:26 PM
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Of course Vic and I have great abs....
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Old 09-06-2019, 10:19 AM
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Quote:
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This will be you.....
https://sadtrombone.com/
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Old 09-06-2019, 12:28 PM
Charles Friedman Charles Friedman is offline
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To quote Greg Engelesby 100 hours straight to 2000 degrees works every time.
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Old 09-06-2019, 03:07 PM
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Maybe with an empty pot that wasn't as porous..This puppy is half full and went through an unregulated shutdown to get to where it is today.

Unprepared optimists are the meat and potatoes in my business. If I was unethical, I would charge a premium to move desperate people to the front of the line. I get asked frequently enough...
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