[TheForge] Venturi Burners Hot Enough?

Fri May 16 13:41:00 2003

Hi Bruce- I actually use your and Marshall's mod of the venturi design that Ron Reil used to have on his site. I like it alot.
I have welded in this forge with store bought fluxes, some of which contained borax, I'm sure. However, the green flame appears only when the forge is at temp. and is balanced 'just right'. At that point there is no scale on the work until it comes out of the forge. I don't always hit it like that as it's true, they run a little hotter in a lean state, hence the scaling problems so many are familiar with. For alot of work extra scale is not a problem and I'm often introducing it into the finish anyway to give textural effects.

Steve 
Seattle

-----Original Message-----
From: Bruce Freeman [mailto:[email protected]]
Sent: Friday, May 16, 2003 9:43 AM
To: [email protected]
Subject: Re: [TheForge] Venturi Burners Hot Enough?

Right.  Copper can make a flame green.  But so can borax (different color green).  Have you used any borax in your forge?

Bruce
NJ
?----------------
Someone mentioned a long time ago here (Dave B?) that when things were just right, he got a green flame out of his forge. Me too. I have never melted brass, bronze, etc. in this forge so I have to agree that there may be some reason to this: too lean a flame is blue, too rich is yellow. What do these two colors combine to make in the spectrum?  Just a guess.

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