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02-17-2013, 01:47 PM #14
For smallish pipe (under 1 1/2") I typically use 5 SCFH, if anything over that I will use 15 or even 20 SCFH, the trick is to get in, get it hot, weld it up and get out...
It's funny, but you would be amazed at the amount of newbie techs we get that use the "if it's glowing it's flowing attitude". This is so wrong it's silly.
I have literally brazed 7 to 10 time the amounts of joints with one bottle of oxygen and acetylene than most apprentices and they almost always have leaks, with lots of practice comes a proven technique.
GTIf a day goes by and you have learned nothing, I hope you got a lot of sleep.