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glaze flux

updated wed 25 oct 00

 

Michael Sowers on sat 21 oct 00


In my teapots I use holes through the body to allow liquids into the spout
(also serve as a strainer). In the last firing I had some of these holes
clog because the glaze spanned the holes during firing. I want to re-fire
these pieces and flux the glaze around and in the holes so they will clear.
The question is what to use to do this? My first thought is to paint over
the area with a silica paste in the hopes that during the final stages of
the firing it would flux the glaze in that area. Does anyone have experience
doing something like this and know a better way/method of accomplishing it?
Drilling the holes out is not viable due to the angles involved and the
hardness of the cone 10 glazes used.
Thanks

Michael Sowers
Email: mike@classiclinespottery.com
Web: www.classiclinespottery.com

Yvon LeDouget on sat 21 oct 00


Bonjour, cher "clayarter"
Prevention is better than cure...
I propose you to keep clear of glaze the teapot holes putting hard wax
into before glazing.
Excuse my poor english.
Yvon (Bretagne/France)

Michael Sowers on sat 21 oct 00


Normally I take preventive measures however this time I forgot on some so I
am trying to save the teapots if possible. If there is no relatively easy
way to flux the glaze then I will discard the pots. I fired 35 teapots in
one load and about six that have the problem.

Michael Sowers
Email: mike@classiclinespottery.com
Web: www.classiclinespottery.com

-----Original Message-----
From: Ceramic Arts Discussion List [mailto:CLAYART@LSV.CERAMICS.ORG]On
Behalf Of Yvon LeDouget
Sent: Saturday, October 21, 2000 10:41 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: Glaze flux

Bonjour, cher "clayarter"
Prevention is better than cure...
I propose you to keep clear of glaze the teapot holes putting hard wax
into before glazing.
Excuse my poor english.
Yvon (Bretagne/France)

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michael wendt on sat 21 oct 00


Michael,
Will a Dremel moto tool fir inside your teapot? If so, a siliconcarbide
stone whizzes through glaze like magic.
Good luck,
Michael Wendt
-----Original Message-----
From: Michael Sowers
To: CLAYART@LSV.CERAMICS.ORG
Date: Saturday, October 21, 2000 3:45 PM
Subject: Re: Glaze flux


>Normally I take preventive measures however this time I forgot on some so I
>am trying to save the teapots if possible. If there is no relatively easy
>way to flux the glaze then I will discard the pots. I fired 35 teapots in
>one load and about six that have the problem.
>
>Michael Sowers

Cindy Strnad on sat 21 oct 00


Hmm, I don't know Michael.

Sometimes when you have this problem, all you need to do is fire the pieces
again and the glaze clears out. I don't think silica would clear it out. And
I'm not sure a flux on the surface would help all that much, though it
might. However, re-firing may fix them without anything else done.

Cindy Strnad
Earthen Vessels Pottery
RR 1, Box 51
Custer, SD 57730
USA
earthenv@gwtc.net
http://www.earthenvesselssd.com

Michael Sowers on sun 22 oct 00


Thanks, I think you are right but I thought with all the resources available
through ClayArt I would see if someone knew a trick I had not heard of yet.
If it takes longer to fix than it takes to make a new one then it is not
worth it. I did try going to a smaller hole and I am sure that is the main
cause of the problem since it normally doesn't happen. Off with their heads.

Michael Sowers
www.classiclinespottery.com

-----Original Message-----
From: Ceramic Arts Discussion List [mailto:CLAYART@LSV.CERAMICS.ORG]On
Behalf Of Paul Taylor
Sent: Sunday, October 22, 2000 5:37 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: Glaze flux

Dear Michael

I am certain silica will not work.

YOU could paint a low firing borax fritt on the holes but that may cause
bubbling.

Teapots do not take well to refiring there seems to be a deterioration in
their thermal properties.

I am the last person to condemn a pot to the shard pile but in this
case I would put a hole in the bottom and plant geraniums.

My teapots have large holes that do not fill with glaze. I have never
had any complaints. The amount of extra tea leaves that get through is so
little that I do not think the extra mucking about making small holes is
worth it.

Regards from Paul Taylor.
http://www.anu.ie/westportpottery

> From: Michael Sowers
> Reply-To: Ceramic Arts Discussion List
> Date: Sat, 21 Oct 2000 08:13:42 -0600
> To: CLAYART@LSV.CERAMICS.ORG
> Subject: Glaze flux
>
> In my teapots I use holes through the body to allow liquids into the spout
> (also serve as a strainer). In the last firing I had some of these holes
> clog because the glaze spanned the holes during firing. I want to re-fire
> these pieces and flux the glaze around and in the holes so they will
clear.
> The question is what to use to do this? My first thought is to paint over
> the area with a silica paste in the hopes that during the final stages of
> the firing it would flux the glaze in that area. Does anyone have
experience
> doing something like this and know a better way/method of accomplishing
it?
> Drilling the holes out is not viable due to the angles involved and the
> hardness of the cone 10 glazes used.
> Thanks
>
> Michael Sowers
> Email: mike@classiclinespottery.com
> Web: www.classiclinespottery.com
>
>
____________________________________________________________________________
__
> 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.

____________________________________________________________________________
__
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.

Eydie DeVincenzi on sun 22 oct 00


Message text written by Ceramic Arts Discussion List
>Will a Dremel moto tool fir inside your teapot? If so, a siliconcarbide
stone whizzes through glaze like magic.
<

Problem with these two methods is they also take away the shine
Eydie

Martin Howard on mon 23 oct 00


I would put a hole in the bottom and plant geraniums.

Sorry, you must mean pelargoniums. Common fault, even amongst nursery
gardeners.

Martin Howard
Webb's Cottage Pottery
Woolpits Road, Great Saling
BRAINTREE, Essex CM7 5DZ
England
martin@webbscottage.co.uk

Paul Taylor on mon 23 oct 00


Dear Michael

I am certain silica will not work.

YOU could paint a low firing borax fritt on the holes but that may cause
bubbling.

Teapots do not take well to refiring there seems to be a deterioration in
their thermal properties.

I am the last person to condemn a pot to the shard pile but in this
case I would put a hole in the bottom and plant geraniums.

My teapots have large holes that do not fill with glaze. I have never
had any complaints. The amount of extra tea leaves that get through is so
little that I do not think the extra mucking about making small holes is
worth it.

Regards from Paul Taylor.
http://www.anu.ie/westportpottery

> From: Michael Sowers
> Reply-To: Ceramic Arts Discussion List
> Date: Sat, 21 Oct 2000 08:13:42 -0600
> To: CLAYART@LSV.CERAMICS.ORG
> Subject: Glaze flux
>
> In my teapots I use holes through the body to allow liquids into the spout
> (also serve as a strainer). In the last firing I had some of these holes
> clog because the glaze spanned the holes during firing. I want to re-fire
> these pieces and flux the glaze around and in the holes so they will clear.
> The question is what to use to do this? My first thought is to paint over
> the area with a silica paste in the hopes that during the final stages of
> the firing it would flux the glaze in that area. Does anyone have experience
> doing something like this and know a better way/method of accomplishing it?
> Drilling the holes out is not viable due to the angles involved and the
> hardness of the cone 10 glazes used.
> Thanks
>
> Michael Sowers
> Email: mike@classiclinespottery.com
> Web: www.classiclinespottery.com
>
> ______________________________________________________________________________
> 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.