"Tim Williams" wrote in message ...
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I never really got the idea behind it. Apparently his model worked
quite nicely, but personally I don't see how it could possibly draw
in enough air. Maybe his jet hole drill was much smaller than he
thought.

Hi Tim. Thank you for confirming my suspicions. The flame really
does look too rich. This may be the only problem. So, if I go with a
smaller jet hole, things should work better. Or, I can use one of the
more tried and true designs, such as the Ron Reil EZ Burner. He does
not mention it on his web page, but google says that he has brazed
very large items with his burners. My little prototype will not even
melt brass held in the middle of the flame. One of the www pages he
links to says that a good burner flame will melt a cast aluminum
washing machine transmission in open air, and is hard to stand even 6
feet away from.

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fittings instead, whatever), and at the other, a .023" tweeco tip.

AHA! I am using a .035" tip. Your first hand information is really
valuable.

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Oh, and for reference, a #57 drill (.04"-ish I think) is best fitted
to a 1" pipe (that is, with extra lean-ness headroom to choke it down
to neutral).

Got it, thanks Tim!!

Eric
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