Keisha on thu 1 jan 04
Teresa
Yeah you can make glaze from the ash in your fire
place. My professor did it and his pots looked good
too.
--- steve harrison wrote:
> >> I would like to make a single fire ash glaze
> from the ashes in my
> >> fire
> >> place. Has any one ever done this before? Do
> you have any
> >> suggestions.
> >>
> >> Teresa
>
> Hi Teresa,
> Yes you can make a glaze from fireplace ashes.
> Ash varies greatly from species to species. Some ash
> is very high in
> alkali (sodium, potassium) others are higher in
> alkali earths (calcium
> in particular, but also magnesium) while others are
> very high in silica.
> This means that there is no way of knowing in
> advance just how the ash
> will melt - if at all, just by itself.
> It also depends on the temperature you want to fire
> it at. Generally
> speaking, ash glazes are best at stoneware, but of
> course there are
> many exceptions. However, when you get below cone 6,
> it become
> increasingly difficult to get a good melt. It will
> be more likely that
> you will get a dry glaze at this temp or lower.
> Ash glazes are complicated further by the fact that
> the same species of
> plant material growing in different localities
> (soil) will have
> slightly differing analysis.
> Interestingly, most potters don't realise that
> different parts of the
> same tree will yield different ash analysis.
> The best short answer I can give is to collect a
> reasonable amount of
> ash, mix it well to ensure consistency, sieve
> through fly screen or
> fine garden sieve (do this outside wearing a dust
> mask). Then fire a
> small amount in a small test bowl. This will tell
> you how it melts by
> itself. You can then decide what if anything that
> you might want to
> blend it with.
>
> You may be interested in a book that I have written
> called 'Rock
> Glazes, Geology and Mineral Processing for Potters'
> which has a section
> in it that deals with ash. it also covers a lot of
> other found
> materials that potters can pick up from their local
> environment.
>
> 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
>
>
______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change
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>
> Moderator of the list is Mel Jacobson who may be
> reached at melpots@pclink.com.
=====
Keisha Pegues
Mound Bayou, MS
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Fredrick Paget on fri 2 jan 04
I have been getting a lot of fine slick paper catalogs for Christmas
season - Sharper image, Hammach and Schlemmer, etc. and wanting to
get rid of them I burned a stack of them in my airtite wood stove
with a good hot wood fire of plum tree wood on top of them and the
ash was a pile of white calcined Kaolin from the slick paper which
was mixed with the ash from the fruitwood.
So I have been wondering if this mixture is already a glaze? Maybe
just mix it with water and put it on?
Fred
--
From Fred Paget, Marin County, California, USA
fredrick@well.com
Sam or Mary Yancy on fri 2 jan 04
You might get a picture of a sharper image sale item on you pottery/piece.
Fredrick Paget wrote:I have been getting a lot of fine slick paper catalogs for Christmas
season - Sharper image, Hammach and Schlemmer, etc. and wanting to
get rid of them I burned a stack of them in my airtite wood stove
with a good hot wood fire of plum tree wood on top of them and the
ash was a pile of white calcined Kaolin from the slick paper which
was mixed with the ash from the fruitwood.
So I have been wondering if this mixture is already a glaze? Maybe
just mix it with water and put it on?
Fred
--
From Fred Paget, Marin County, California, USA
fredrick@well.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.
steve harrison on fri 2 jan 04
>> I would like to make a single fire ash glaze from the ashes in my
>> fire
>> place. Has any one ever done this before? Do you have any
>> suggestions.
>>
>> Teresa
Hi Teresa,
Yes you can make a glaze from fireplace ashes.
Ash varies greatly from species to species. Some ash is very high in
alkali (sodium, potassium) others are higher in alkali earths (calcium
in particular, but also magnesium) while others are very high in silica.
This means that there is no way of knowing in advance just how the ash
will melt - if at all, just by itself.
It also depends on the temperature you want to fire it at. Generally
speaking, ash glazes are best at stoneware, but of course there are
many exceptions. However, when you get below cone 6, it become
increasingly difficult to get a good melt. It will be more likely that
you will get a dry glaze at this temp or lower.
Ash glazes are complicated further by the fact that the same species of
plant material growing in different localities (soil) will have
slightly differing analysis.
Interestingly, most potters don't realise that different parts of the
same tree will yield different ash analysis.
The best short answer I can give is to collect a reasonable amount of
ash, mix it well to ensure consistency, sieve through fly screen or
fine garden sieve (do this outside wearing a dust mask). Then fire a
small amount in a small test bowl. This will tell you how it melts by
itself. You can then decide what if anything that you might want to
blend it with.
You may be interested in a book that I have written called 'Rock
Glazes, Geology and Mineral Processing for Potters' which has a section
in it that deals with ash. it also covers a lot of other found
materials that potters can pick up from their local environment.
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
ASHPOTS@AOL.COM on sat 3 jan 04
First thing ,,, Happy New Year to all my clay pals around the world....
ash,,, i use ash,, i use it 50 % ash and about any thing else i can come up
with.. I taught a ash glaze work shop at the App Center for Craft.. I had
brought eleven different clays to test with ash 50 /50.. Cool results..It was also
a good way for people that had never used a gram scale.. Mostly ash is lighter
than clay so its mostly more ash ,, easy to see when its weighed out.. We
screened each batch thru a 40 and a 80 mesh screen.. We then sprayed each test..
I mostly use red art and also i use Plastic Vitrox for my blue ash glaze.. I
try to keep it simple ,, works for me...50/50
try anything with the ash,50/50 .. i use small bowls.. i only use the inside
for the ash glaze.. share any thing special, please
I fire in a old Alpine, Gas , Reduction
A friend from Ala, Ursula does ash glazes in electric and her glazes and pots
are wonderfull, they are sold at River Gallery on the Art Bluff in
Chattanooga
Ash Glaze,, simple , but becarefull they RUNNNNNNNNN
Mark
www.lookoutmountainpottery.com
have started building a new place on the bluff.. Im going to have a basement
also known as a wine cellar.. Had to use dynamite to remove some rock.. way
cool
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