Len Hughes on mon 25 aug 97
I just joined this list and as yet have not heard any "raku" talk. I make my
living selling Raku fired pottery to galleries and gift shops. Shipping is a
pain, but a necessary one. Anyone else enjoying Raku out there?
katie rose on tue 26 aug 97
At 10:12 AM 8/25/97 EDT, Len Hughes wrote:
>----------------------------Original message----------------------------
>I just joined this list and as yet have not heard any "raku" talk. I make my
>living selling Raku fired pottery to galleries and gift shops. Shipping is a
>pain, but a necessary one. Anyone else enjoying Raku out there?
>
hi,
i am going to be driving a good distance to pick up some clay the day after
tomorrow, and i am wondering if i can get some good help online before i do.
my question regards raku, and i would like to know if one can successfully
use low, mid and hi fire clay for raku, and if there are benefits with using
one type more than another.
thanks in advance...
katie rose
****************************************************
katie rose
raven@sedona.net
"Love is the reflection of God's unity in the world of duality. It
constitutes the entire significance of creation." (Meher Baba)
Wendy olivia on tue 26 aug 97
I have a raku question...
I have a 20" wide 24" tall "top hat" style fiber raku kiln and I'm having a
problem with too much reduction inside the kiln. At least I think that's
the problem. All of my copper glazes are VERY red and copper penny when
they are usually turquoise/blue green.
My shelf is 4-1/2" off the floor and my burner opening is 3-1/2" x 6." I
have a 2" x 4" peep hole @half way up and a 4" x 4" flue hole in the top. I
was going to raise the shelf some more but I thought I'd see if anyone had
any ideas.
Any help would be appreciated....
At 10:12 AM 8/25/97 EDT, you wrote:
>----------------------------Original message----------------------------
>I just joined this list and as yet have not heard any "raku" talk. I make my
>living selling Raku fired pottery to galleries and gift shops. Shipping is a
>pain, but a necessary one. Anyone else enjoying Raku out there?
>
Toni Hall on tue 26 aug 97
Katie,
I have found that ignorance can be bliss, or it can be a nightmare,
where raku clay bodies are concerned. I have, through ignorance, used
any clay body I had, and sometimes it turns out OK. I have successfully
used Raku clay, which is most durable in the fire, as well as cone 10
clay bodies. The plain stoneware is not as durable, but it will work if
it is not too thin or the piece is not too large. Experiment and expect
more losses until you work out the kinks. Good luck. Toni in NM
Dannon Rhudy on tue 26 aug 97
Katie, I have used just about everything to fire raku, and really
have not found any problems in firing that way, no matter what the
clay body. It all seems to work, from the coarse and groggy
"raku" clays to porcelain. I prefer a general stoneware body,
because the darker clay seems to benefit some of the glazes we
use, but it all works. If it is a tight body, like a porcelain,
without much give, just fire a bit slower going up, and don't
sit a fresh piece on a hot shelf (put a cold brick or piece of
kiln shelf between the already-hot shelf and the piece going in.)
Dannon Rhudy
potter@koyote.com
hi,
i am going to be driving a good distance to pick up some clay the
day after
tomorrow, and i am wondering if i can get some good help online
before i do.
my question regards raku, and i would like to know if one can
successfully
use low, mid and hi fire clay for raku, and if there are benefits
with using
one type more than another.
thanks in advance...
katie rose
****************************************************
katie rose
raven@sedona.net
"Love is the reflection of God's unity in the world of duality.
It
constitutes the entire significance of creation." (Meher Baba)
Laura Freedman on tue 26 aug 97
katie rose wrote:
>
> ----------------------------Original message----------------------------
> At 10:12 AM 8/25/97 EDT, Len Hughes wrote:
> >----------------------------Original message----------------------------
> >I just joined this list and as yet have not heard any "raku" talk. I make my
> >living selling Raku fired pottery to galleries and gift shops. Shipping is a
> >pain, but a necessary one. Anyone else enjoying Raku out there?
> >
>
> hi,
>
> i am going to be driving a good distance to pick up some clay the day after
> tomorrow, and i am wondering if i can get some good help online before i do.
> my question regards raku, and i would like to know if one can successfully
> use low, mid and hi fire clay for raku, and if there are benefits with using
> one type more than another.
>
> thanks in advance...
>
> katie rose
>
> ****************************************************
> katie rose
> raven@sedona.net
>
> "Love is the reflection of God's unity in the world of duality. It
> constitutes the entire significance of creation." (Meher Baba)
---------------
Hi Katie, I do some raku and have used Standard Ceramics 239 raku clay.
Spent a weekend rakuing with others and found some used stoneware and it
appeared to work just as well. I think a lot has to do with your bisque
firing, which cone you fire to. We were all asked to bisque our things
to 04 before we got together. There was very little breakage. Mainly
from goofs like dropping, stepping on, etc. Some people bisque 06 some
02. I believe the higher you bisque the less absorption of glaze. I have
no experience with low fire clay. I have personally only used the 239
but I have seen stoneware (Phoenix comes to mind from Highwater Clay)
used.
--
MZ
douglas gray on wed 27 aug 97
In message Wendy olivia writes:
> ----------------------------Original message----------------------------
I'm having a
> problem with too much reduction inside the kiln.
my burner opening is 3-1/2" x 6." I
> have a 2" x 4" peep hole @half way up and a 4" x 4" flue hole in the top.
I'm not sure what type of kiln you are using, or what fuel, but...
Try one of these:
1) your burner port should be at least two inches larger in diameter than your
burner.
2) You might try increasing the size of your flu hole. It can always be closed
partially with a kiln shelf (kind of like a damper). Steve Branfman suggests in
his book that the flu should be about 1 and 1/2 times the area of the burner
port.
3) If you are not using a forced air burner, you might try to pull the burner
out from the kiln some to allow for more secondary air. I kept my burner almost
two inches out side the actual burner port to supply more air.
doug
Douglas E. Gray
Assistant Professor of Art, Ceramics
Francis Marion Univeristy
Florence, South Carolina
dgray@fmarion.edu
Gary Ferguson on wed 27 aug 97
Wendy
It might have to do more with your post-firing reduction. How quickly
are you moving the pot to the reduction chamber? If it is only a second
or two you will probably get all copper. If you do a slow pull of 15
seconds to a minute you should get greens. It would also depend on how
much combustable material is in your reduction chambers. I use shreded
paper and typically the bottom half of my pots are more coppery than the
top because they are sitting in a "nest" of paper and starved of oxygen.
Hope this helps
Gary Ferguson
Wendy olivia wrote:
>
> ----------------------------Original message----------------------------
> I have a raku question...
>
> I have a 20" wide 24" tall "top hat" style fiber raku kiln and I'm having a
> problem with too much reduction inside the kiln. At least I think that's
> the problem. All of my copper glazes are VERY red and copper penny when
> they are usually turquoise/blue green.
>
> My shelf is 4-1/2" off the floor and my burner opening is 3-1/2" x 6." I
> have a 2" x 4" peep hole @half way up and a 4" x 4" flue hole in the top. I
> was going to raise the shelf some more but I thought I'd see if anyone had
> any ideas.
>
> Any help would be appreciated....
>
> At 10:12 AM 8/25/97 EDT, you wrote:
> >----------------------------Original message----------------------------
> >I just joined this list and as yet have not heard any "raku" talk. I make my
> >living selling Raku fired pottery to galleries and gift shops. Shipping is a
> >pain, but a necessary one. Anyone else enjoying Raku out there?
> >
David Woodin Set Clayart Digest on wed 27 aug 97
You might want to pull your burner farther away from the burner port like an
inch or more.
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