Joann on sat 24 jan 04
Has anyone used stone dust or ground stone, say like granite or soapstone
dust? Curious....
--Joann in Maine
Hank Murrow on mon 26 jan 04
Dear Joan;
Most granites have enough feldspar in them to make them useful
candidates for high temperature fires. Soapstone is pretty much like
talc, which is also useful in high temperature fires. For electric
fires, you will need some strong fluxes to accompany.
Cheers, Hank in Eugene
On Jan 24, 2004, at 3:45 PM, Joann wrote:
> Has anyone used stone dust or ground stone, say like granite or
> soapstone
> dust? Curious....
Ababi Sharon on mon 26 jan 04
Hello Joann.
I did not but Rowe has done it:
http://digitalfire.com/books/517.php
Ababi
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Joann
Sent: Sunday, January 25, 2004 1:46 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: ground granite or soapstone in glaze
Has anyone used stone dust or ground stone, say like granite or
soapstone
dust? Curious....
--Joann in Maine
Craig Edwards on mon 26 jan 04
Howdy Joann and all;
I live about 30 miles from Cold Spring Granite quarries. They produce
several tons of fine granite dust everyday, from cutting granite. I've
used the dust and made some interesting glazes. My biggest problem was
that it was hard to keep in suspension, it literally sank like a rock.
The folks at the quarry think of the granite dust as an industrial
waste, and dump it back into old quarries that have filled with water.
I would come looking for qranite dust and they thought that I might be
the answer to their prayers. They were really disapointed when I only
took 100 lbs. rather than 100 tons. :O)
Perhaps next time I roll through there I'll pick some up and see what
happens.
It gets to be a grind, he he
Craig Edwards
New London MN
>>Has anyone used stone dust or ground stone, say like granite or soapstone
>>dust? Curious....
>>
>>
>
>
>
>
Dave Finkelnburg on mon 26 jan 04
Joann,
Rock dust, especially from stone cutters, is frequently used in glazes.
You do need to think about what the rock is made of, though.
For example, granite is feldspar, mica and quartz. At cone 10 the
feldspar will melt, the quartz may not, and the mica will tend to iron spot
and add interest to a glaze.
Soapstone, on the other hand, is usually mostly talc (magnesium
silicate), which is a flux. If it's fine enough it will melt fully at cone
5. Depending on the quantity used, it can change the color and fit of a
glaze.
So whichever stone dust you use, do your research first to anticipate
how tests will turn out. By the way, mixed stone dust can be problematic.
You'll never know just what's in it.
Good glazing!
Dave Finkelnburg
----- Original Message -----
From: "Joann"
To:
Sent: Saturday, January 24, 2004 4:45 PM
> Has anyone used stone dust or ground stone, say like granite or soapstone
> dust? Curious....
Hendrix, Taylor J on mon 26 jan 04
There is a 1999 edition:
Glazes from natural sources.=20
Brian Sutherland
1999=20
English Book 128 p. : ill. (chiefly col.) ; 24 cm.=20
London : A. & C. Black, ISBN: 0713647558=20
Taylor, in library
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of william
schran
Sent: Monday, January 26, 2004 4:21 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: ground granite or soapstone in glaze
...
Book published in 1987, Glazes from Natural Sources by Brian
Sutherland, pub. B.T. Batsford, London that contains lots of good
information on this subject.
...
Hendrix, Taylor J on mon 26 jan 04
Very very cool question, Joann. I know potters who LOVE to use wild
ingredients like stone dust. Steve Harrison is one.
Granite dust can make some wicked cool glazes. Depending on the cone,
you may not need to add much additional flux. Soapstone is or is very
similar to talc, so it would be a good flux for a glaze.
Man! I want to have fun too.
Taylor, in Waco
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Joann
Sent: Saturday, January 24, 2004 5:46 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: ground granite or soapstone in glaze
Has anyone used stone dust or ground stone, say like granite or
soapstone
dust? Curious....
--Joann in Maine
Zoe Paddy Johnson on mon 26 jan 04
Hi:
I have made a couple batches of glaze that consist basically of granite
dust mixed with ash. I come up with sort of a tranparent olive green
glaze that matures by cone 6. I looks pretty much the same in oxidation
and reduction. At cone 04, it is sort of a matte opaque yellow. Zoe J
--On Saturday, January 24, 2004 6:45 PM -0500 Joann
wrote:
> Has anyone used stone dust or ground stone, say like granite or soapstone
> dust? Curious....
>
> --Joann in Maine
>
> _________________________________________________________________________
> _____ 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.
william schran on mon 26 jan 04
Joann wrote:>Has anyone used stone dust or ground stone, say like
granite or soapstone
dust?<
Book published in 1987, Glazes from Natural Sources by Brian
Sutherland, pub. B.T. Batsford, London that contains lots of good
information on this subject.
Bill
steve harrison on tue 27 jan 04
Hi Joan,
Granite makes excellent glazes, you only need to add a small amount of
limestone or whiting to it to get a very nice glaze. about 20% whiting
to 80% granite dust will probably be pretty close to the mark.
Talc or soapstone on the other hand needs both felspar and whiting
added. However, it gives a very nice waxy matt surface.
The best way to find out the best recipe for your specific local
material is to to a line blend test. You may be interested in a book
that I have written called 'Rock Glazes and mineral processing for
potters' If you are interested, you can find out more about it at Ian
Currie's web site below. Just click on the URL.
Best wishes
Steve Harrison
Hot & Sticky Pty Ltd
5 Railway Pde
Balmoral Village
NSW 2571
Australia
http://ian.currie.to/sh/Steve_Harrisons_books.html
On Sunday, January 25, 2004, at 10:45 AM, Joann wrote:
> Has anyone used stone dust or ground stone, say like granite or
> soapstone
> dust? Curious....
>
> --Joann in Maine
>
> _______________________________________________________________________
> _______
> 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.
>
>
Brian on tue 27 jan 04
On 24/1/04,you wrote...
>Has anyone used stone dust or ground stone, say like granite or soapstone
>dust? Curious....
A few years ago we tried some experiments mixing all kinds of unusual
ingredients in the clay including quarry dust,rock salt, beach
shingle, crushed sea shells and cement.
There are pictures and an article about this.......
try http://www.gartside.info/sickofslickchart.htm
Not IN glaze but UNDER the glaze these materials in the clay yielded
some erratic and striking glaze textures.
Brian
--
http://www.gartside.info
Pukekohe, New Zealand
Stephen on tue 27 jan 04
I have ball milled granite from Mt Airy N.C., purchased in the form of
Chicken grit, My masters teacher, Jeff kaller, pointed out how close its
analisis was to corwall stone. I used it alone and in combination with
other ingrediants and got good results. Alone at cone 10-12, it was a pale
green. With ash, clay, and Limestone, it was veined like similar alkaline
glazes.
Stephen
Ababi Sharon on tue 27 jan 04
Once I made a claybody using local soil for raku. It was kind of ugly
but responded nice to colors because of the FeO3
Ababi
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Brian
Sent: Tuesday, January 27, 2004 4:35 AM
To: CLAYART@LSV.CERAMICS.ORG
Subject: Re: ground granite or soapstone in glaze
On 24/1/04,you wrote...
>Has anyone used stone dust or ground stone, say like granite or
soapstone
>dust? Curious....
A few years ago we tried some experiments mixing all kinds of unusual
ingredients in the clay including quarry dust,rock salt, beach
shingle, crushed sea shells and cement.
There are pictures and an article about this.......
try http://www.gartside.info/sickofslickchart.htm
Not IN glaze but UNDER the glaze these materials in the clay yielded
some erratic and striking glaze textures.
Brian
.
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