[TheForge] Gas Forge Recommendation

[Peter Fels And Phoebe Palmer]

  Don:
I saw one that John Fick built...it was impressively even heat with a 
very neutral flame. He had a mixing chamber for the air and gas below 
the ceramic balls and the flame seemed to be restricted to the the 
ceramic medium pretty much.
The only drawback I can see is the difficulty of heating delicate 
attenuated forgings. John just stuffed his stock into the pile of orange 
ceramic balls. He had it set upo like a gas slot forge with a flat 
refactory table and a dry stack brick top...Pete F

don schad wrote:
> I did a little web search, and as you pointed out, I couldn't find
> much detail regarding such a forge.  So I will post a couple of things
> that I am musing about.
> 
> if I have a burner pointed at the bottom of a cube of ceramic balls, I
> presume that there is going to be a frustum of a cone-of-heat formed,
> with the widest part of the cone furthest from the burner and of
> larger diameter then where the burner is aimed (i.e. a cone balanced
> on it's blunted tip).  I assume that the primary factor controlling
> the size of the large end of the hot-zone (i.e. the useable area) for
> a given depth of balls will be the ceramic-ball size, with smaller
> balls (to a point) yielding a wider, albeit cooler cone.
> 
> So if our input is a "typical" 3/4" naturally asiprated pipe and
> Tweco-tip forge burner, what sort of depth and usable hot area would
> we be able to achive(assuming "usable" means orange to yellow)?  What
> are the typical/resonable/proven parameters for such a forge (depth of
> balls, diameter, burner size)?
> 
> Thanks,
> 
> don
> 
> 
> On 7/12/05, Keporter at aol.com <Keporter at aol.com> wrote:
> 
>>Chuck
>>There isn't very much to  visualize. Just think about the  construction of a
>>regular coal fired forge, replacing the coal  with broken refractory brick
>>(home made ceramic balls of castable  refractory are better), change out the
>>tuyer for a refractory portal  and gas burner, and then make a few other changes,
>>like making the forge body  out of heavy kiln shelving (or castable
>>refractory) in order to take  the heat, and your in business.
> 
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