Cynthia Gehr on tue 29 sep 98
O.K. all you experienced electric kiln people!! I glaze fire my pots to cone
6 relatively fast , it takes about 7 hrs. to reach cone 6 after an overnight
preheat. Do I have to be careful about some of colors burning out at this
temp.? I really am drawn to the purples, reds, and rich colors. Does firng
speed matter or is it all about temp? Thanks!!!
*******************************UF student sick chicken!!! BAK!BAK!BAK!********
Donn Buchfinck on wed 30 sep 98
I would call the speed that you fire at a medium firing ramp.
what matters is what your clay body is doing at that temperature. if it is
still gassing out, then you could have pin holes. so if this happens then a
good idea is to soak at the end of the firing, this is a point whee you hold
the kiln temperature at one point. taking some of the peepholes out will help
do this.
different glazes take different firing scheduals, just like in the gass fired
variety. it is just going to take time to learn your kiln and the range of
glazes you want to use.
a good way to deal with this is
TEST TEST TEST and TEST SOME MORE
godd luck
Donn Buchfinck
Cindy on fri 2 oct 98
Cynthia,
Firing speed and temperature are intertwined inextricably. (How's that for
a turn of phrase? ) The slower you fire, the lower the temperature you
will need to finish with in order to achieve a desired stage of "doneness".
Slower firings mean greater intermingling of glaze components for a richer,
more mature glaze. Slower firings also increase the tendency of glazes to
run, and up the possibility of warping your kiln shelves. I find they tend
to result in greater areas of lesser blues in my cobalt glazes. The blues
that remain, however, are darker and more mysterious.
I don't use reds or yellows or the other bright, bright colors simply
because I don't care enough about them to struggle to obtain them. Reds in
a ^6 electric kiln would, I think, be elusive indeed. For the bright
colors, most people I know of turn to lower firing ranges. If you want
brilliant colors at ^6, a faster firing would seem to me to be more likely
to help you reach your goal.
Cindy Strnad
Earthen Vessels
Custer, SD
USA http://blackhills-info.com/a/cindys/menu.htm
----------
> From: Cynthia Gehr
> To: CLAYART@LSV.UKY.EDU
> Subject: Re: firing glaze kilns
> Date: Tuesday, September 29, 1998 7:16 AM
>
> ----------------------------Original message----------------------------
> O.K. all you experienced electric kiln people!! I glaze fire my pots to
cone
> 6 relatively fast , it takes about 7 hrs. to reach cone 6 after an
overnight
> preheat. Do I have to be careful about some of colors burning out at
this
> temp.? I really am drawn to the purples, reds, and rich colors. Does
firng
> speed matter or is it all about temp? Thanks!!!
>
> *******************************UF student sick chicken!!!
BAK!BAK!BAK!********
>
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