Ann Brink on wed 1 oct 08
Elise, I'm not one of the glaze experts, but this slip recipe looks to me
like it only has the 3110 frit to induce it to get sticky and want to stay
on the pot; all the rest of the ingredients are free to peel up as the pot
shrinks. I can imagine your horror when you saw that casserole!
I haven't tried slip on bisque, but always apply it to leatherhard or
freshly thrown pots. I think if you want a slip on bisque, it's going to
have to be more glaze-like than your recipe. Just my opinion.
Ann Brink in Lompoc CA
(mostly about pottery)
----- Original Message -----
From: "elise pincu"
To:
Sent: Wednesday, October 01, 2008 7:07 AM
Subject: Bisque Slip
> Hello and thanks for being there for me!
>
> I am using a bisque slip and am having problems with it peeling off the
> pot during the glaze firing and taking the glaze with it. Anyone ever
> experience this problem?
>
> Here is the recipe:
>
> EPK - 15
> Calcined EPK - 20
> Neph Sy - 10
> Talc - 10
> 3110 - 15
> Silica - 20
> Zircopax - 10
>
> I fire to cone 4. I dunk my pots in this very thin slip. I then glaze
> with two glazes overlapped.
>
> Please help!
>
> Thanks,
> Elise
>
elise pincu on wed 1 oct 08
I recently posted a question about my bisque slip and peeling issues. I have posted some images of the peeling on Flickr. Please go to this link to view the images and help me discover my problems.
http://www.flickr.com/photos/31064293@N08/?sa
Thanks again!
Elise
elise pincu on wed 1 oct 08
Hello and thanks for being there for me!
I am using a bisque slip and am having problems with it peeling off the pot during the glaze firing and taking the glaze with it. Anyone ever experience this problem?
Here is the recipe:
EPK - 15
Calcined EPK - 20
Neph Sy - 10
Talc - 10
3110 - 15
Silica - 20
Zircopax - 10
I fire to cone 4. I dunk my pots in this very thin slip. I then glaze with two glazes overlapped.
Please help!
Thanks,
Elise
John Rodgers on wed 1 oct 08
Oefta!!!
Is your slip made from the same clay as your pots??
John Rodgers
Chelsea, AL
elise pincu wrote:
> I recently posted a question about my bisque slip and peeling issues. I have posted some images of the peeling on Flickr. Please go to this link to view the images and help me discover my problems.
>
> http://www.flickr.com/photos/31064293@N08/?sa
>
> Thanks again!
> Elise
>
>
>
Steve Mills on thu 2 oct 08
Dear Elise,
I have a very good bisque slip, the recipe for which I've put below. Perhap=
s it would be a good idea to make up two fresh batches; one of your recipe =
and one of mine, and compare the results under the glaze you used in the pi=
ctures.
Also I'm afraid, one always has to be prepared for "Pilot Error" in this ga=
me as I know from experience; having mixed up some "interesting" glazes by =
accident in the past!
By the way I assume from the pictures you are firing to stoneware temperatu=
res.
High Fire Bisque Slip:
Calcined China clay (Kaolin) 25 parts by weight
High Silica Ball Clay=A0 25 parts=20
Potash Feldspar 45 Parts
Calcium Borate Frit 10 parts (Digital Fire give F4112 as your equivalent fr=
it)=20
Steve
Bath
UK
--- On Wed, 10/1/08, elise pincu wrote:
From: elise pincu
Subject: Bisque Slip
To: CLAYART@LSV.CERAMICS.ORG
Date: Wednesday, October 1, 2008, 3:07 PM
Hello and thanks for being there for me!
I am using a bisque slip and am having problems with it peeling off the pot
during the glaze firing and taking the glaze with it. Anyone ever experien=
ce
this problem?
Here is the recipe:
EPK - 15
Calcined EPK - 20
Neph Sy - 10
Talc - 10
3110 - 15
Silica - 20
Zircopax - 10
I fire to cone 4. I dunk my pots in this very thin slip. I then glaze wit=
h
two glazes overlapped.
Please help!
Thanks,
Elise
=0A=0A=0A
Des & Jan Howard on fri 3 oct 08
Steve
The calcium borate frit you show in this recipe is, I imagine, P2954,
which is virtually identical to F4112.
F4112 is no longer being made & P2954 is not available in Oz.
I bought up the last of both of these frits in 4 states.
Any other suggestions for very high boron frits?
Des
Steve Mills wrote:
> Calcined China clay (Kaolin) 25 parts by weight
> High Silica Ball Clay 25 parts
> Potash Feldspar 45 Parts
> Calcium Borate Frit 10 parts (Digital Fire give F4112 as your equivalent frit)
--
Des & Jan Howard
Lue Pottery
Lue NSW
Australia
2850
02 6373 6419
www.luepottery.hwy.com.au
Steve Mills on fri 3 oct 08
Des,
I'm afraid I can't help you there.
P2954 is still listed on Potterycrafts' website and available in the UK.
As for F4112; in checking my information I was directed to an "updated page" on the Digital Fire site where it was listed as current, but I can't vouch for the veracity of that information, and I fear that yet again what is current north of the equator may not be where you are!
Best wishes.
Steve
Bath
UK
--- On Fri, 10/3/08, Des & Jan Howard wrote:
From: Des & Jan Howard
Subject: Re: Bisque Slip
To: CLAYART@LSV.CERAMICS.ORG
Date: Friday, October 3, 2008, 1:07 AM
Steve
The calcium borate frit you show in this recipe is, I imagine, P2954,
which is virtually identical to F4112.
F4112 is no longer being made & P2954 is not available in Oz.
I bought up the last of both of these frits in 4 states.
Any other suggestions for very high boron frits?
Des
Steve Mills wrote:
> Calcined China clay (Kaolin) 25 parts by weight
> High Silica Ball Clay 25 parts
> Potash Feldspar 45 Parts
> Calcium Borate Frit 10 parts (Digital Fire give F4112 as your equivalent
frit)
--
Des & Jan Howard
Lue Pottery
Lue NSW
Australia
2850
02 6373 6419
www.luepottery.hwy.com.au
pat gilmartin on fri 3 oct 08
Forgive my ignorance, but what is the advantage of putting slip on bisque before glazing? Why not put it on greenware before the bisque?
elise pincu on fri 3 oct 08
hI jOHN,
Nope. My slip is not my clay cause I think it would shrink at a different rate than the bisqued pot. Also, I use a red earthenware and am putting white slip on to mask the red clay in areas of the pot.
See my newest posting for more info....
Thanks for your response,
Elise
--- On Wed, 10/1/08, John Rodgers wrote:
> From: John Rodgers
> Subject: Re: Bisque Slip
> To: CLAYART@LSV.CERAMICS.ORG
> Date: Wednesday, October 1, 2008, 6:32 PM
> Oefta!!!
>
> Is your slip made from the same clay as your pots??
>
> John Rodgers
> Chelsea, AL
>
>
> elise pincu wrote:
> > I recently posted a question about my bisque slip and
> peeling issues. I have posted some images of the peeling on
> Flickr. Please go to this link to view the images and help
> me discover my problems.
> >
> > http://www.flickr.com/photos/31064293@N08/?sa
> >
> > Thanks again!
> > Elise
> >
> >
> >
Bonnie Staffel on sat 4 oct 08
You might refer to Daniel Rhodes book (can't tell you which one) as I =
recall
some years ago he addressed slip with recipes for both green ware and =
bisque
ware. Seems that on the bisque ware there was some borax introduced. I =
used
one of his early books but I can't put my hands on my copy at the =
moment.
Bonnie Staffel
http://webpages.charter.net/bstaffel/
http://vasefinder.com/bstaffelgallery1.html
DVD Throwing with Coils and Slabs
DVD Introduction to Wheel Work
Charter Member Potters Council
Ron Roy on mon 6 oct 08
Des,
My info says 3110 (high alkaline) is the same as 4110 - do you have an
analysis for P2954?
Thanks - RR
>Steve
>The calcium borate frit you show in this recipe is, I imagine, P2954,
>which is virtually identical to F4112.
>F4112 is no longer being made & P2954 is not available in Oz.
>I bought up the last of both of these frits in 4 states.
>Any other suggestions for very high boron frits?
>Des
>
>Steve Mills wrote:
>> Calcined China clay (Kaolin) 25 parts by weight
>> High Silica Ball Clay 25 parts
>> Potash Feldspar 45 Parts
>> Calcium Borate Frit 10 parts (Digital Fire give F4112 as your equivalent
>>frit)
>
>--
>Des & Jan Howard
>Lue Pottery
>Lue NSW
>Australia
>2850
>
>02 6373 6419
>www.luepottery.hwy.com.au
Ron Roy
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Des & Jan Howard on thu 9 oct 08
Ron
PotteryCrafts P2954
% analysis
CaO 27.13
Al2O3 4.78
SiO2 17.7
B2O3 50.39
Mol formula
CaO 1.0
Al2O3 0.097
SiO2 0.609
B2O3 1.5
Ferro 4112
% analysis
CaO 26.25
Al2O3 4.2
SiO2 17.2
B2O3 49.53
Mol formula
CaO 1.00
Al2O3 0.09
SiO2 0.61
B2O3 1.52
Ron Roy wrote:
> Des,
> My info says 3110 (high alkaline) is the same as 4110 - do you have an
> analysis for P2954?
--
Des & Jan Howard
Lue Pottery
Lue NSW
Australia
2850
02 6373 6419
www.luepottery.hwy.com.au
Donald Burroughs on fri 10 oct 08
Hello Everyone
=20
Some more info on the topic of bisque slips. See attachment of Rudy Autio S=
uper Slip using David Hewitt's CeramDat. This slip works quite well on bisq=
ue especially when sprayed.
=20
Regards=2C Don Burroughs=20
=20
=20
_________________________________________________________________
Bob Santerre on thu 16 oct 08
Don, the data sheet for this slip recipe indicates the firing range as
cone 04 - 6. Do you know if there's an adjustment of this formula to
move the firing range to cone 10?
Thanks, Bob
///////////////////////////////////////////////////////////////////////////////////////////
Donald Burroughs wrote:
>Hello Everyone
>
>Some more info on the topic of bisque slips. See attachment of Rudy Autio Super Slip using David Hewitt's CeramDat. This slip works quite well on bisque especially when sprayed.
>
>Regards, Don Burroughs
>
>
>_________________________________________________________________
>
>
>
>
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