Lou Roess on mon 29 nov 04
Hi Ron, I have been using your beautiful Sapphire glaze and love the
depth and sparkle, It's wonderful. One problem I've been having with
it is running on the outside of bowls such that there are globs of
glaze hanging down almost to the shelf. The only reason they don't get
to the shelf is because I have a generous trimmed foot on most of my
bowls. Is there a way to adjust this glaze so that it doesn't run so
much yet still has the same wonderful qualities? If not, maybe pouring
the insides and brushing the outsides so there isn't so much glaze on
the outside? I usually dip my pieces. I fire to cone 6 electric, and
the recipe I'm using is as follows:
SAPPHIRE BLUE Revised Cone 6
37 Frit 3134
16 Custer
4 Strontium Carb
26 EPK
17 Silica
2.5 Cobalt carb
4.5 Rutile
Any suggestions gratefully received.
Thanks,
Lou in Colorado
Maid O'Mud on mon 29 nov 04
I've been using this glaze for a few years and I barely trim - just a slight
bevel and flat bottom.
Perhaps you are applying too thickly? I just dip my stuff in and out -
basically apologizing for
getting the pot wet
HTH
Sam Cuttell
Maid O'Mud Pottery
RR 1
Melbourne, Ontario
N0L 1T0
CANADA
"First, the clay told me what to do.
Then, I told the clay what to do.
Now, we co-operate."
sam 1994
http://www.ody.ca/~scuttell/
scuttell@ody.ca
----- Original Message -----
From: "Lou Roess"
> Hi Ron, I have been using your beautiful Sapphire glaze and love the
> depth and sparkle, It's wonderful. One problem I've been having with
> it is running on the outside of bowls such that there are globs of
> glaze hanging down almost to the shelf. The only reason they don't get
> to the shelf is because I have a generous trimmed foot on most of my
> bowls.
Ron Roy on tue 30 nov 04
Hi Lou,
Sounds like you are either overfiring or it's too thick - You using large
witness cones?
You can do some experiments to stiffen the glaze - You may lose the look
you want but it's wroth a try
Reduce the frit by 1 and increase the EPK by 1 for test #1 - do it by three
for each for test #2.
Mix 500 grams of each - you can add the remainder to the glaze you have
mixed up.
After dipping some pots in 1 and 2 - mix them together and call it 1+2.
This will give a short line blend that will show if going in the direction
of adding a refractory at the expense of a melter will do the job.
>Hi Ron, I have been using your beautiful Sapphire glaze and love the
>depth and sparkle, It's wonderful. One problem I've been having with
>it is running on the outside of bowls such that there are globs of
>glaze hanging down almost to the shelf. The only reason they don't get
>to the shelf is because I have a generous trimmed foot on most of my
>bowls. Is there a way to adjust this glaze so that it doesn't run so
>much yet still has the same wonderful qualities? If not, maybe pouring
>the insides and brushing the outsides so there isn't so much glaze on
>the outside? I usually dip my pieces. I fire to cone 6 electric, and
>the recipe I'm using is as follows:
>
>SAPPHIRE BLUE Revised Cone 6
>37 Frit 3134
>16 Custer
>4 Strontium Carb
>26 EPK
>17 Silica
>
>2.5 Cobalt carb
>4.5 Rutile
>
>Any suggestions gratefully received.
>Thanks,
>Lou in Colorado
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
Lou Roess on tue 30 nov 04
On Nov 30, 2004, at 1:15 PM, Ron Roy wrote:
> Hi Lou,
>
> Sounds like you are either overfiring or it's too thick - You using
> large
> witness cones?
>
> Ron
Ron, yes, I'm using large self standing cones and they indicate the
kiln is firing just right, so it must be too thick. I'll try it
thinner and if that doesn't work then go to the changes you mentioned .
Thanks for your reply.
Lou in Colorado
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