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Boro Room -- For Boro-related tips, techniques, and questions.

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Old 2019-01-08, 1:24am
Blackbunny Blackbunny is offline
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Join Date: Dec 14, 2018
Posts: 2
Default A concentrator question

Hello everyone)
I am pretty new to lampworking, just have some experience with soft glass. But I am dreaming of tube implosions and fuming
I work on Mega Minor torch and 5 lpm oxygen concentrator. The question is - will i be able to try working with boro tubes on it or the second concentrator is necessary?
And how to bake boro glass in the kiln? Sorry if my questions are stupid, just couldn't find the answers here
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Old 2019-01-08, 11:44pm
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Kare TX Kare TX is offline
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Join Date: Jul 24, 2007
Location: Oklahoma
Posts: 358

You will probably need two. It will still be slow. Bottled would be better.

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Old 2019-02-03, 11:45am
Kevin7191975 Kevin7191975 is offline
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Join Date: Oct 24, 2018
Posts: 25

I have a gtt bobcat with the same dreams of implosions as you, lol.I use 3 5lpm at 4lpm each max, total of 12 lpm when fulled ppened oxygen. i can burn 16mm rod quick, but if you have 2 you should be great or 1 10lpm. Check the torches spec, i also have tanked but that goes quick, so unless if im doing something specific that need tank o2 ill use that but 2 5 LPM should be fine when i have 3 on it rips up boro

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Old 2019-02-03, 6:45pm
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Eileen Eileen is offline
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And you anneal boro at 1050, and remember the rule about thickness, so marbles for example you need to add time. I think it is 15 minutes per 1/4" of thickness, but I am not sure.
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Old 2019-02-03, 8:26pm
Subduction Subduction is offline
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Join Date: Jun 22, 2018
Location: WA
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I can't find any numbers from Nortel but here is a nice table of bench torch oxygen requirements:
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Old 2019-03-04, 3:57pm
BKingery BKingery is offline
Join Date: Dec 29, 2018
Location: Raleigh NC
Posts: 6

I have a Mega Minor torch and I use 3 5lpm oxygen concentrators. Runs at ~12-14lpm total. I keep an oxygen tank attached to the larger torch head which I believe uses ~40lpm and I use sparingly.
I have multiple used oxygen concentrators for sale at a great price. I picked them up as a package deal. Message me if interested.
Best to you.
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