[Clayart] Time for going to 10
Michael Wendt via Clayart
clayart at lists.clayartworld.com
Tue Aug 5 01:51:00 EDT 2014
I clock about 20-30 minutes from cone 8 to cone 9 and another 30 minutes
from cone 9 to cone 10. Extrapolting backwards would suggest around 15-20
minutes per cone down at cone 6 (higher delta "T" compared to the flame temp
of 3000 degrees F). My guess is a couple hours more max.
----- Original Message -----
From: "Earl Krueger via Clayart" <clayart at lists.clayartworld.com>
Cc: "Clayart posting" <clayart at lists.clayartworld.com>
Sent: Monday, August 04, 2014 5:15 PM
Subject: [Clayart] Time for going to 10
> Mel-san and others,
> Recently I read someone say that in a gas fueled kiln it took took twice
> long to fire to cone 10 as it took to fire to cone 6.
> Given that cone 10 is only about 250 degrees F, or 11% higher than cone 6
> the author's statement seems questionable to me.
> So, I'm asking those with experience in firing well tuned gas kilns, under
> low to moderate reduction how much longer does it take to get to 10 vs 6?
> MAILMAN_MIMEDEFANG WRAP
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