Earl Brunner on thu 4 nov 99
Indeed it would seem to be the case with downdrafts as well. My firing instruct
book that came with my Geil kiln gives instructions to force a stall to even out
uneven temperatures. Uneven temperatures can be typical of fast firing. My firi
schedule to cone 10 is normally 6 hours. I am going to force myself to fire slo
and see if the glazes will look a little better. This kiln has a digital pyrome
and it has totally changed the way I fire. I never had a clue that temperature
ws so sensitive to the smallest adjustments.
The slightest movement of the damper either in or out can make the difference in
whether the kiln gains temperature or not. Same with the gas pressure. Leaving
peep hole plug out can provide enough secondary air to eliminate reduction.
Michael Rector wrote:
> ----------------------------Original message----------------------------
> I do not have enough experience with downdraft kilns to know if they have
> similar tendencies. I would be interested to hear from those who fire downdra
> kilns on this topic. In the few fires I have done, I have noticed that when
> damper is fairly wide open there is often a cold area in the lower front, and
> one closes the damper a bit this area tends to catch up fairly rapidly.
>
Earl Brunner
http://coyote.accessnv.com/bruec
mailto:bruec@anv.net
| |
|
