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fast firing....

updated wed 30 apr 97

 

Rice on wed 16 apr 97

Greetings:

I am still working on fast firing. It is very doable. I use 6pound fiber-
2x2"=4" thickness. I attach it to a metal grid structure originally
designed for hogs. Heh heh.
My first kiln is only 7-8 cubic feet. It sits on a brick floor with a
small brick perimeter. I use a standard raku weed burning type torch with
propane. I fire very fast on the way up and pack up the ports at final
peak. I then let the kiln sit until cool - about 8-10 hours. But firing
itself takes only about 2-21/4 hours. I heavily reduce from cone 08 until
about cone 5. Actually I use a cone 08 and a pyrometer to gauge when to
oxidize - about 2125f. You need to oxidize at the end anyway to kick the
kiln up to the 2200-2250 range. I know this is sketchy. I am short of funds
right now but will get more info and digital pics a web site somewhere as
soon as possible. Look for postings with subject including 'fast firing'.
Hope this helps a bit.

> From: David James
> To: rice@sentex.net
> Subject:
> Date: Tuesday, April 15, 1997 5:43 AM
>
> Hi
>
> Missed your first post on your fast-fire kiln and your follow-up letter
> sounds fascinating. What design kiln are you using? Do you have plans for
> it?
> Am based in Durban, South Africa, and can buy all the necessary in
ceramic
> fibre, fire bricks etc.
> Would LOVE to have three-hour firing set-up.
> Regards
> David James
>
>