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"river rock" type glaze help needed

updated thu 6 jul 00

 

Jim Bozeman on mon 3 jul 00


Just making a stab in the dark: What if you poured the glaze into some of
that very thin kiln shelf separator (not sure what the official name is)
that glass artists use when they fuse glass???
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Lori Wilkinson on mon 3 jul 00


Yes, it is an intriguing idea. If you read the message just a little
further, that was my question to CLAYART. Maybe I didn't make it clear
enough. Sorry

Lori


-----Original Message-----
From: Rod, Marian, and Holly Morris
To: CLAYART@LSV.CERAMICS.ORG
Date: Monday, July 03, 2000 3:59 PM
Subject: Re: "River Rock" type glaze HELP needed


>Intriguing idea. What did you fire the first glaze IN so that you could
>break it up without its being attached to the vessel that kept it off your
>kiln floor?
>
>Marian in Michigan
>----- Original Message -----
>From: "Lori Wilkinson"
>To:
>Sent: Monday, July 03, 2000 12:20 PM
>Subject: "River Rock" type glaze HELP needed
>
>
>> ----------------------------Original message----------------------------
>> "At a tom coleman workshop before the vegas ncecaand tom said that to
>> make those river rock effects to fire one glaze to about cone06. break
>this
>> glaze up with ahammer but not too small. then mix with another glaze the
>> prefired glaze won't mix well with the other glaze. tom used them as
>> deco on a white glaze and they
>> looked real similar to river rock."
>> ........................................
>>
>> Could someone out there please tell me how a ^6 glaze can be fire or in
>what
>> sort of a container it can be fired without it becoming one with said
>> container even at ^ 06 or cooler ?? Any ideas would be appreciated.
>>
>>Lori

Lori Wilkinson on mon 3 jul 00


----------------------------Original message----------------------------
"At a tom coleman workshop before the vegas ncecaand tom said that to
make those river rock effects to fire one glaze to about cone06. break this
glaze up with ahammer but not too small. then mix with another glaze the
prefired glaze won't mix well with the other glaze. tom used them as
deco on a white glaze and they
looked real similar to river rock."
........................................

Could someone out there please tell me how a ^6 glaze can be fire or in what
sort of a container it can be fired without it becoming one with said
container even at ^ 06 or cooler ?? Any ideas would be appreciated.

Tim & Lori Wilkinson
DOWN TO EARTH POTTERY
Roswell, New Mexico

http://www.geocities.com/SoHo/Gallery/1165/

Rod, Marian, and Holly Morris on mon 3 jul 00


Intriguing idea. What did you fire the first glaze IN so that you could
break it up without its being attached to the vessel that kept it off your
kiln floor?

Marian in Michigan
----- Original Message -----
From: "Lori Wilkinson"
To:
Sent: Monday, July 03, 2000 12:20 PM
Subject: "River Rock" type glaze HELP needed


> ----------------------------Original message----------------------------
> "At a tom coleman workshop before the vegas ncecaand tom said that to
> make those river rock effects to fire one glaze to about cone06. break
this
> glaze up with ahammer but not too small. then mix with another glaze the
> prefired glaze won't mix well with the other glaze. tom used them as
> deco on a white glaze and they
> looked real similar to river rock."
> ........................................
>
> Could someone out there please tell me how a ^6 glaze can be fire or in
what
> sort of a container it can be fired without it becoming one with said
> container even at ^ 06 or cooler ?? Any ideas would be appreciated.
>
> Tim & Lori Wilkinson
> DOWN TO EARTH POTTERY
> Roswell, New Mexico
>
> http://www.geocities.com/SoHo/Gallery/1165/
>
>
____________________________________________________________________________
__
> 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.
>

David Hendley on tue 4 jul 00


Well, I've been making glazes this way for years,
but they don't look like 'river rock'.
I call them 'frit glazes', because what you are really
doing is making your own frit - frit is just a combination
of materials that are mixed, fired, and then broken
down into small pieces again.

Anyway, there is no reason to fire the glaze that you
want to frit in a solid mass that you will then have to
break up after it's fired and hard.
For the spotted 'river rock' effect, mix the glaze you want
to frit as usual, then let the water evaporate from it.
Pour it in or on plaster batt if you're in a hurry.
Then, just break it apart with your hands and run it
through a sieve, something on the order of 'window
screen' mesh. Start with 1/2 to 1" pieces and use the
screen to kind of grind the pieces smaller. They grind
easily. (Dust mask time).
Next, run everything through a 40 - 60 mesh screen,
to remove the powder that is too fine. The powder will
be ready to make more glaze by adding water to it.
You are now left with chunks a that are but >40-60 mesh. Put them in a bowl in your next bisque
firing, and when you unload you will have correctly sized
chunks, ready to add to the base glaze.

Important point: I am using cone 10 glazes. If you are
using lower firing glazes, there may be some sintering
and even melting at bisque temperature. For your first
try, put the chunks in a 'waster' bowl, so in case there
is some melting you won't worry about damaging a good
piece. If there is some melting, I think a couple of good
whacks with a hammer (frit material inside a bag) will
separate it into your pre-sized pieces again.
--
David Hendley
Maydelle, Texas
hendley@tyler.net
http://www.farmpots.com/




>----------------------------Original message----------------------------
>"At a tom coleman workshop before the vegas ncecaand tom said that to
>make those river rock effects to fire one glaze to about cone06. break this
>glaze up with ahammer but not too small. then mix with another glaze the
>prefired glaze won't mix well with the other glaze. tom used them as
>deco on a white glaze and they
>looked real similar to river rock."
>........................................
>
>Could someone out there please tell me how a ^6 glaze can be fire or in
what
>sort of a container it can be fired without it becoming one with said
>container even at ^ 06 or cooler ?? Any ideas would be appreciated.
>
>Tim & Lori Wilkinson
>DOWN TO EARTH POTTERY
>Roswell, New Mexico
>

Khaimraj Seepersad on tue 4 jul 00


Good Day , people ,

Tim & Lori Wilkinson,

you can use a container , coated with a 1/4 inch of silica flour ,
float it with bentonite [ make it the constancy of cream ] .
Or a coating of kaolin [ calcinated ] also 1/4 inch thick , and the
same with bentonite .

Use a glaze 6 mix , that has no carbonates in it , or anything else
to decompose or froth up .
If you have an old kiln , test kiln , or other , place container [ use
something able to with stand cone 10 firing and still be porous ]
in kiln and fire to cone 6 . soak , until your sure the whole mass is
glass and all bubbles are out .
[ Clear glass can be coloured ]

When the kiln is cooled , remove and carefully break the container.
Should come out , as a mass , with a coating of silica or calcinated
kaolin .

To break safely into lumps - heat to 600 or so deg.c , and throw
mass into ice cold water - say a galvanised container - very large
and deep .
Will shatter , and if your lucky - finely enough to use .

If you choose the hard way - place the lump into many layers of
old cloth , and smash with a hammer .
When finished , bundle carefully into paper bag , then a garbage bag
and trash , at once.

I would imagine for this " river rock " idea to work , both glazes would
have to have similar expansions , or there will be cracks ?
I hope this helps ,
Khaimraj

* Isn't there a river rock , or stonewash commercial glaze that does this ?




-----Original Message-----
From: Lori Wilkinson
To: CLAYART@LSV.CERAMICS.ORG
Date: 03 July 2000 13:01
Subject: "River Rock" type glaze HELP needed


>----------------------------Original message----------------------------
>"At a tom coleman workshop before the vegas ncecaand tom said that to
>make those river rock effects to fire one glaze to about cone06. break this
>glaze up with ahammer but not too small. then mix with another glaze the
>prefired glaze won't mix well with the other glaze. tom used them as
>deco on a white glaze and they
>looked real similar to river rock."
>........................................
>
>Could someone out there please tell me how a ^6 glaze can be fire or in
what
>sort of a container it can be fired without it becoming one with said
>container even at ^ 06 or cooler ?? Any ideas would be appreciated.
>
>Tim & Lori Wilkinson
>DOWN TO EARTH POTTERY
>Roswell, New Mexico
>
>http://www.geocities.com/SoHo/Gallery/1165/
>
>___________________________________________________________________________
___
>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.
>

Lori Wilkinson on wed 5 jul 00


David, letting the water evaporate sounds like a terrific idea. Your such a
gem! Thanks for the reply. I'll let you know how it turns out. May take a
while for it to evaporate but will get back to you when my grandson tries
it.

Lori


-----Original Message-----
From: David Hendley
To: CLAYART@LSV.CERAMICS.ORG
Date: Wednesday, July 05, 2000 5:52 AM
Subject: Re: "River Rock" type glaze HELP needed


>Well, I've been making glazes this way for years,
>but they don't look like 'river rock'.
>I call them 'frit glazes', because what you are really
>doing is making your own frit - frit is just a combination
>of materials that are mixed, fired, and then broken
>down into small pieces again.
>
>Anyway, there is no reason to fire the glaze that you
>want to frit in a solid mass that you will then have to
>break up after it's fired and hard.
>For the spotted 'river rock' effect, mix the glaze you want
>to frit as usual, then let the water evaporate from it.
>Pour it in or on plaster batt if you're in a hurry.
>Then, just break it apart with your hands and run it
>through a sieve, something on the order of 'window
>screen' mesh. Start with 1/2 to 1" pieces and use the
>screen to kind of grind the pieces smaller. They grind
>easily. (Dust mask time).
>Next, run everything through a 40 - 60 mesh screen,
>to remove the powder that is too fine. The powder will
>be ready to make more glaze by adding water to it.
>You are now left with chunks a that are >but >40-60 mesh. Put them in a bowl in your next bisque
>firing, and when you unload you will have correctly sized
>chunks, ready to add to the base glaze.
>
>Important point: I am using cone 10 glazes. If you are
>using lower firing glazes, there may be some sintering
>and even melting at bisque temperature. For your first
>try, put the chunks in a 'waster' bowl, so in case there
>is some melting you won't worry about damaging a good
>piece. If there is some melting, I think a couple of good
>whacks with a hammer (frit material inside a bag) will
>separate it into your pre-sized pieces again.
>--
>David Hendley
>Maydelle, Texas
>hendley@tyler.net
>http://www.farmpots.com/
>
>
>
>
>>----------------------------Original message----------------------------
>>"At a tom coleman workshop before the vegas ncecaand tom said that to
>>make those river rock effects to fire one glaze to about cone06. break
this
>>glaze up with ahammer but not too small. then mix with another glaze the
>>prefired glaze won't mix well with the other glaze. tom used them as
>>deco on a white glaze and they
>>looked real similar to river rock."
>>........................................
>>
>>Could someone out there please tell me how a ^6 glaze can be fire or in
>what
>>sort of a container it can be fired without it becoming one with said
>>container even at ^ 06 or cooler ?? Any ideas would be appreciated.
>>
>>Tim & Lori Wilkinson
>>DOWN TO EARTH POTTERY
>>Roswell, New Mexico
>>
>
>___________________________________________________________________________
___
>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.
>