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Re: Hot Glass Q's
>>
>>Here's the Q's:
>>
>>Everything I seem to put in the cannon fire appears to turn to pure lead very
>>quickly, and I've got the flames dialed _way_ down. I moved the heads back
>
>When you say dialed down - you should hopefully see a relatively violet
>color to the flame, that is, relative to a baby blue rich flame. Ideally,
>the flame should hiss a bit. Adjust the air up abit, the gas down. Try these
>adjustments after the burner has been on a few minutes.
JD,
More air - less gas. Start with air just barely below the blowing-out
point. If this flame darkens your glass, see some of Kenny's suggestions.
You may also have a poorly-sized mixer for your application.
I know for 2 of the S21-N's the mixer should have a #24 jet and a #30
venturi orfice (these numbers are drill sizes). I use this size with 3 of
the tips with good success, so theres obviously some headroom. Don't know
if propane changes things enough to warrant a new mixer. You can make your
own mixer out of 1/4" brass tube fittings and experiment. A good mixer
really makes a difference.
Another shop here in Austin uses propane, and they have good performance
from it - even say they prefer it to nat. gas. I'll take a look at their
set-up more closely next time I go over to bum something.
-John
______________________________________________________________________________
John Anderson
Mega Volt Neon - Austin, TX
dead@netcom.com
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