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  #1  
Old 2017-07-17, 5:57pm
Fired-up Fired-up is offline
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Red face How big can we go on a torch

I'm planning to blow boro tube into vessel but am wondering how big can I blow with a torch ?
What is the maximum tube size and blown vessel size possible with a torch ? I'm planning to buy a big size torch to blow boro soon. It will be connect to oxygen tanks.
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  #2  
Old 2017-07-18, 10:35am
Shaper Shaper is offline
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I've seen a 6 inch diameter pitcher blown using 50mm heavy wall tube and a GTT Delta Mag. It was about 9 inches tall. I think there have probably been larger pieces made by someone but I haven't seen them in person.
The ability to do something like that is determined more by your experience than anything else. Can you effectively handle a large piece of heavy molten glass? If so then go for it. By the way a Delta Mag turned up will empty a K tank of oxy in about 15 minutes.

Last edited by Shaper; 2017-07-18 at 10:38am.
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  #3  
Old 2017-07-18, 1:40pm
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Cosmo Cosmo is offline
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Depends on the person doing the blowing. There really isn't a limit other than ability.
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Old 2017-07-18, 5:52pm
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menty666 menty666 is offline
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Yup, it's about managing heat base effectively. The bigger limits are your patience and oxygen supply.
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Old 2017-12-17, 4:30pm
Bluegoose Bluegoose is offline
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These were made on a torch by Roger Parramore. The largest is over 36.
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  #6  
Old 2017-12-22, 9:49pm
glass addict glass addict is offline
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Wow!
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