Jennifer M. Dubats on mon 12 oct 98
Hello,
I have just purchased some Laguna cone 5 B-mix. I usually fire to cone 6 and
I am wondering if this body can take the extra heat if I fire it to cone 6
instead of cone 5. Has anyone has ever fired this clay to cone 6? I would
love to hear about the results.
Thanks in advance.
Sincerely,
Jenny Dubats
In Richmond Va. , pouring the pad for a new reduction kiln today and praying
that it does not rain.
HLMass@aol.com on tue 13 oct 98
In a message dated 10/12/98 9:08:41 AM Eastern Daylight Time,
Plaznclay@AOL.COM writes:
<<
I have just purchased some Laguna cone 5 B-mix. I usually fire to cone 6 and
I am wondering if this body can take the extra heat if I fire it to cone 6
instead of cone 5. Has anyone has ever fired this clay to cone 6? I would
love to hear about the results. >>
Jenny,
I have been working with the cone 5 B-mix and successfully firing to cone 6
each time. When I first began using it, however, there were those on the list
that had problems with bloating at this temperature. I haven't experienced
this problem personally.
Heather in Columbia, CT
Caryl W. on tue 13 oct 98
>I am wondering if this body can take the extra heat if I fire it to
cone 6
>instead of cone 5. Has anyone has ever fired this clay to cone 6?
I've used B-Mix 5 to cone 6 for the last three years.My firing schedule
slows right down between 1180C to 1205C (30C per hour),and then I lower
the temperature to 1195C and do a 20 minute soak which brings the cone
down to a perfect Cone 6.I've never experienced any bloating or such
doing it this way, but I know a while back there was some discussion
about B-Mix 5 and someone wrote in to say they had some bloating
problems after Cone 5.Perhaps the firing schedule has something to do
with this??Good luck with it.
Caryl
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gari whelon on tue 13 oct 98
Hi Jenny:
I've used cone 5 B-mix for a few years in electric firings in the cone 6
range with no problems.
Gari Whelon
Nanaimo, B.C.
v>----------------------------Original message----------------------------
>Hello,
>
>I have just purchased some Laguna cone 5 B-mix. I usually fire to cone 6 and
>I am wondering if this body can take the extra heat if I fire it to cone 6
>instead of cone 5. Has anyone has ever fired this clay to cone 6? I would
>love to hear about the results.
>
>Thanks in advance.
>
>Sincerely,
>
>
>Jenny Dubats
>In Richmond Va. , pouring the pad for a new reduction kiln today and praying
>that it does not rain.
>
>
Don Prey on tue 13 oct 98
In a message dated 10/12/98 6:09:15 AM, you wrote:
<<
I have just purchased some Laguna cone 5 B-mix. I usually fire to cone 6 and
I am wondering if this body can take the extra heat if I fire it to cone 6
instead of cone 5. Has anyone has ever fired this clay to cone 6? I would
love to hear about the results.>>
Jenny, I have fired the cone 5 b-mix to cone six quite a few times. I found
that it would have a tendency to stick to the kiln shelf, but other than that
was ok. cone six is probably a definite upper limit.
Don Prey in Oregon
Les Crimp on tue 13 oct 98
Jennie -
I use it all the time and fire at Cone 6 all the time. I really like the
clay - smooth and easy to throw. Bisques to a great white color. I bisque
to cone 08. Glazes seem to work very well and have enjoyed using this clay.
Several people in our Arrowsmith Potters Guild also use Cone 5 B-Mix. Good
Luck!!!
Les Crimp in Nanoose Bay, B.C.
>----------------------------Original message----------------------------
>Hello,
>
>I have just purchased some Laguna cone 5 B-mix. I usually fire to cone 6 and
>I am wondering if this body can take the extra heat if I fire it to cone 6
>instead of cone 5. Has anyone has ever fired this clay to cone 6? I would
>love to hear about the results.
>
>Thanks in advance.
>
>Sincerely,
>
>
>Jenny Dubats
>In Richmond Va. , pouring the pad for a new reduction kiln today and praying
>that it does not rain.
>
>
Nancy Udell on thu 13 sep 07
I think your kiln temps must be off. Are you using cones? In my
experience, by full cone 7, Cone 5 Bmix will start to blister a bit.
It's just great at Cone 6.
> I found that Cone 5 B
> mix was not fully vitrified (leak-proof without glaze) until about
> cone 7.
>
Nancy Udell
Santa Fe, New Mexico
505.984.9907
www.clayandcolor.net
John Hesselberth on thu 13 sep 07
I use cones in every firing. I know what I am doing. It could be that
I got a bad batch of Bmix--as I said I have only used 2 boxes--but
others have told me of similar results. Are you sure your pots are
not leaking?
Regards,
John
On Sep 13, 2007, at 9:20 AM, Nancy Udell wrote:
> I think your kiln temps must be off. Are you using cones? In my
> experience, by full cone 7, Cone 5 Bmix will start to blister a bit.
> It's just great at Cone 6.
John Hesselberth
www.frogpondpottery.com
"Man is a tool-using animal....without tools he is nothing, with
tools he is all" .... Thomas Carlyle
Nancy Udell on wed 17 oct 07
Hi Bob,
I know others have said this, but I think I can confirm that you're
firing hotter than Cone 6 if you're going to 2232 with a 20 minute
hold. I get 6 over and 7 at 10 o'clock on my top shelf when i fire
to 2180. For some reason when I first got the kiln, I had it in my
mind that I needed to fire to 2200 to get to cone 6 (were we looking
at the same erroneous chart). At that temp, I was getting bloating
in the B Mix 5 -- and was getting over firing in MC6G glazes.
Finally wised up and realized my error -- with help from some on the
list of course. Since changing top temp to 2190/2180, no bloating
at all.
Have you tried putting cones on the shelf to see what cone you are
actually getting on the top shelf?
Nancy Udell
Santa Fe, New Mexico
505.984.9907
www.clayandcolor.net
Ron Roy on sun 21 oct 07
Just a reminder that we should assume every thermocouple reads differently
- sometimes by over 100 degrees. Basing anything on the temperatures they
deliver is probably going to be counter productive.
Cones are much more reliable.
RR
>I know others have said this, but I think I can confirm that you're
>firing hotter than Cone 6 if you're going to 2232 with a 20 minute
>hold. I get 6 over and 7 at 10 o'clock on my top shelf when i fire
>to 2180. For some reason when I first got the kiln, I had it in my
>mind that I needed to fire to 2200 to get to cone 6 (were we looking
>at the same erroneous chart). At that temp, I was getting bloating
>in the B Mix 5 -- and was getting over firing in MC6G glazes.
>Finally wised up and realized my error -- with help from some on the
>list of course. Since changing top temp to 2190/2180, no bloating
>at all.
>
>Have you tried putting cones on the shelf to see what cone you are
>actually getting on the top shelf?
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
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