[Clayart] Kiln Stacking

Eva Gallagher galla at magma.ca
Wed Jul 13 18:08:49 EDT 2016

Our Guild ha as 24 cuft bailey downdraft and we have done it both ways with 
good results. However we now keep the tall stuff at the top as it makes the 
stack more stable.
Eva Gallagher

----- Original Message ----- 
From: "Randall Moody via Clayart" <clayart at lists.clayartworld.com>
To: "Clayart" <Clayart at lists.clayartworld.com>
Cc: "Randall Moody" <randall.moody at gmail.com>
Sent: Wednesday, July 13, 2016 1:29 PM
Subject: [Clayart] Kiln Stacking

>I have been wondering about the most efficient stacking scenario for a
> downdraft kiln. I have always stacked shorter items to the bottom and
> taller to the top with a staggering of shelves as much as possible. This
> leaves much more room up top where the heat naturally rises to than the
> bottom. Has anyone tried inverting the stack i.e. tall on bottom and short
> up top?
> Also, I have been firing this kiln for a while (about 30-40 firings)and in
> the same way but for some reason the results are not the same. I am now
> having to fight to keep the kiln evenly heated and get good reduction even
> though I am doing the exact same things at the same times. I either get
> even heat with poor reduction or good reduction with a cone or two
> difference between top and bottom.
> (Firing an ~36 cu ft downdraft with 6 venturi burners pointing up along 
> the
> sides.)
> -- 
> Randall in Atlanta
> http://wrandallmoody.com
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