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how do you patch bisque cracks?

updated fri 17 may 02

 

Mercy Langford on mon 13 may 02


hi Susan- For low fire I use a product called patch a tatch and it's goey
and
the easiest one so far. I buy from my local ceramic supplier but Axner via
net also carries it. For porcelain or high fire I use aztec hi fire mender
and it will be compatible with most clay since the bottle comes with this
transparent ggel and you are supposed to fill it up with your clay mix and
use. I think it 's great and I used the APT 2 before and quickly changed to
aztec. Both you fill the crack wait for it to dry aand then lightly sand to
get rid of excess and firre. Voila- I'll patcch from inside and outside so
far it's the cracks haven't shown again. Hope this helps-Mercy

Dannon Rhudy on mon 13 may 02


At 05:03 PM 05/13/2002 -0700, you wrote:
>i have a crit coming up and i am making teapots. my favorite I used B-Mix
>(5) and it came out with a few deep cracks. I asked my instructor how to
>repair them and she told me to throw it away and start again...not enough
>time and I like the teapot......

It will take less time to make a new pot than to try to repair a
crack. Especially a crack that goes all the way through. Especially
in a teapot. The crack/repair is going to show, and it is going
to make an non-usable teapot. Just do it. Make a new one,
dry it quickly, bisque it. Sooner the better.
Much faster. And use a different clay if you are having trouble
with B-mix. We all lose pots we like.

regards

Dannon Rhudy


>
>What can I use to patch it up? Can I apply a B-Mix slip mixture and try to
>re-bisque? this would require a few firings because the crack went through
>the pot. How many times can I bisque?
>
>any help would be appreciated because my crit is next week.
>
>thanks
>susan
>
>___________________________________________________________________________
___
>Send postings to clayart@lsv.ceramics.org
>
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melpots@pclink.com.
>
>

Lori Leary on mon 13 may 02


Susan,
I know you don't want to hear this, but your instructor is right. It's much
easier to make another one. Any crack in bisqueware is only going to get
larger.

If you don't have time to make another pot, ...well, it would be better to
show up without that teapot than trying to pass off one that has faults.

Your craftsmanship and integrity are the issues here.

If this pot is a new direction for you, why not bring it to the critique,
acknowledge the faults, and ask for feedback on the form and design?

Best of all, make another...or make ten more. Learning how to think of your
work as not precious will set you free.

Hope this helps,
Lori L.
lleary@epix.net
Mountaintop.PA

----- Original Message -----
From: "Susan"
To:
Sent: Monday, May 13, 2002 8:03 PM
Subject: how do you patch bisque cracks?


> i have a crit coming up and i am making teapots. my favorite I used B-Mix
> (5) and it came out with a few deep cracks. I asked my instructor how to
> repair them and she told me to throw it away and start again...not enough
> time and I like the teapot.
>
> What can I use to patch it up? Can I apply a B-Mix slip mixture and try to
> re-bisque? this would require a few firings because the crack went through
> the pot. How many times can I bisque?
>
> any help would be appreciated because my crit is next week.
>
> thanks
> susan

Chris Jones on mon 13 may 02


Well...........I am sure you will get all kinds of answers to this and
usually remaking the piece is the best way, but I have used a kiln patch to
fix broken bisque and greenware. Also, I have seen raw/wet, paper-clay,
handles attached to a prefired (bisque) mug and be fired with total success.
I have some patch already made, e-mail me off list if you want to try it.
Thank you,
Chris Jones

Visit www.jonespottery.net

Earl Brunner on mon 13 may 02


Your instructor was right. But if you ask enough people, someone is bound
to tell
you how you can waste your time.

Susan wrote:

> i have a crit coming up and i am making teapots. my favorite I used B-Mix
> (5) and it came out with a few deep cracks. I asked my instructor how to
> repair them and she told me to throw it away and start again...not enough
> time and I like the teapot.
>
> What can I use to patch it up? Can I apply a B-Mix slip mixture and try to
> re-bisque? this would require a few firings because the crack went through
> the pot. How many times can I bisque?
>
> any help would be appreciated because my crit is next week.
>
> thanks
> susan
>

--
Earl Brunner
http://coyote.accessnv.com/bruec
mailto:bruec@anv.net

Susan on mon 13 may 02


i have a crit coming up and i am making teapots. my favorite I used B-Mix
(5) and it came out with a few deep cracks. I asked my instructor how to
repair them and she told me to throw it away and start again...not enough
time and I like the teapot.

What can I use to patch it up? Can I apply a B-Mix slip mixture and try to
re-bisque? this would require a few firings because the crack went through
the pot. How many times can I bisque?

any help would be appreciated because my crit is next week.

thanks
susan

Keramik Burger on tue 14 may 02


Hallo,
I do not know any of these A-B-C-Mixes, but I use a kind of Paperclay
(exactly Polyethylen-fibres 5%) to repair cracs in porcelain.
I think I tried it with already bisqued pots too, but mostly I did it before
bisquing.
May be that works with A-B-C-Mixes (hopefully even until T-Mix or up to
X-Mix), too.

ciao
Ralf


----- Original Message -----
From: "Susan"
To:
Sent: Tuesday, May 14, 2002 2:03 AM
Subject: how do you patch bisque cracks?


: i have a crit coming up and i am making teapots. my favorite I used B-Mix
: (5) and it came out with a few deep cracks. I asked my instructor how to
: repair them and she told me to throw it away and start again...not enough
: time and I like the teapot.
:
: What can I use to patch it up? Can I apply a B-Mix slip mixture and try to
: re-bisque? this would require a few firings because the crack went through
: the pot. How many times can I bisque?
:
: any help would be appreciated because my crit is next week.
:
: thanks
: susan
:
:
____________________________________________________________________________
__
: Send postings to clayart@lsv.ceramics.org
:
: You may look at the archives for the list or change your subscription
: settings from http://www.ceramics.org/clayart/
:
: Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.
:
:

ThePottery@AOL.COM on tue 14 may 02


I have used what may be called a "Hamada Patch" for years that only works on
flat surfaces or drooped over a cracked rim. Remember where the crack is
then glaze the pot as you usualy do then take a square of T shirt material,
dip in the same glaze placing it over the crack. 9 times out of 10 the T
shirt patch will cover over the crack.

Good Luck Tracy

The Pottery
Penland NC

Jim V Brooks on tue 14 may 02


Most of the advice you are getting is good.. it will probably take longer
to
patch it than to make a new piece.. However,, i have successfully patched
bisque pieces with paperclay/paperclay slip. Not 100% but a good chance it
can work. Paperclay slip is easy to make.. but it all takes time..and it
requires another bisque firing..
Jim in Denton

william schran on tue 14 may 02


Susan - I've had limited success mixing ground up bisqued clay (same
clay as your cracked piece) with sodium silicate into a thick paste,
filing the crack and refiring.
Bill

Janet Kaiser on tue 14 may 02


Just a word of advice on how to make friends and influence people,
especially teachers.

Having asked your instructor for advice and were told to throw it out
and start again, it is diplomatic and not to say advisable to do what
you were told. Why ask, if you are going to do your own thing anyway?
If you start today you have at least a week to get a similar teapot
made. Even if it is not fired, you will at least have a pot which
shows you take pot making, the integrity of your work and your teacher
seriously. You will certainly loose points for (a) ignoring their
advice (b) presenting an imperfect pot (c) being contrary. Depending
on your teacher/s, the critique could be much more nerve-wracking and
horrible if they become voluble about the "rules" you are breaking by
presenting a patched pot, which you were told to abandon. At the very
least, you will also loose credibility for being so precious about one
single pot.

I know, I am a miserable old fart for saying so and it is hard, but
you will gain more than you loose in the long-term.

Janet Kaiser - A wink is as good as a nod to a blind man.
The Chapel of Art / Capel Celfyddyd
Home of The International Potters' Path
8 Marine Crescent : Criccieth : GB-Wales
URL: http://www.the-coa.org.uk
postbox@the-coa.org.uk
----- Original Message -----

> i have a crit coming up and i am making teapots. my favorite I used
B-Mix
> (5) and it came out with a few deep cracks. I asked my instructor
how to
> repair them and she told me to throw it away and start again...not
enough
> time and I like the teapot.
>
> What can I use to patch it up? Can I apply a B-Mix slip mixture and
try to
> re-bisque? this would require a few firings because the crack went
through
> the pot. How many times can I bisque?
>
> any help would be appreciated because my crit is next week.

Earl Brunner on wed 15 may 02


N my opinion there is NOTHING better than glazing the piece back on
short of not having it fall off in the first place....

Earl Brunner
mailto:bruec@anv.net
http://coyote.accessnv.com/bruec


-----Original Message-----
From: Ceramic Arts Discussion List [mailto:CLAYART@LSV.CERAMICS.ORG] On
Behalf Of Donald Goldsobel
Sent: Wednesday, May 15, 2002 7:30 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: how do you patch bisque cracks?

I have a related question. I made a large bowl with three thown feet.
One
came off during the bisque. Aside from gluing it on with glaze and
"firing
as usual" are there any suggestions for joining these parts?


Donald G.

________________________________________________________________________
______
Send postings to clayart@lsv.ceramics.org

You may look at the archives for the list or change your subscription
settings from http://www.ceramics.org/clayart/

Moderator of the list is Mel Jacobson who may be reached at
melpots@pclink.com.

Donald Goldsobel on wed 15 may 02


I have a related question. I made a large bowl with three thown feet. One
came off during the bisque. Aside from gluing it on with glaze and "firing
as usual" are there any suggestions for joining these parts?


Donald G.