LBlos72758@aol.com on mon 6 may 96
>Hello all,
>
>Has anyone noticed a difference in results between a natural gas fired kiln
>and a propane fired one? I switched a few years ago from propane to natural
>because natural is a lot less expensive to use. There was a miller clay #30
>- terracotta that I had fired in a mild reduction using propane and I got a
>range of colors: yellow, pink, brown, tan.. That same clay, in the same
>kiln, with natural only produces shades of brown. Has anyone else noticed
>this?
>
>Also, I found a couple of old white cone sixes and fired them next to the
new
>colored ones and yes, they do fire much flatter than the new ones.
>
>Linda
>Ithaca, NY
>
>
>
>
Bob Kavanagh on wed 8 may 96
When I first started firing with natural gas I noticed a variety of
differences: flame colour, natural gas was cloudier; soot: natural gas
tended to give rise to soot more easily than propane; for similar
reduction I needed to have a denser, yellower flame in natural than in
propane. I always assumed natural gas had more "impurities" in it.
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