Wade Blocker on sun 9 jan 00
Dear Glaze Gurus,
I have been puzzled by a couple of things in the Virginia
Scotchie Glaze Compendium and hope you can help.
I have never used pearl ash - potassium carbonate- K2CO3,
molecular weight 138.2, and wonder if there is a substitute I could use
instead.
Then I came across the abbreviation PBX - could that be for
some lead compound?Any help would be greatly appreciated. Mia in ABQ
Jonathan Kaplan on mon 10 jan 00
>----------------------------Original message----------------------------
>
>Dear Glaze Gurus,
> I have been puzzled by a couple of things in the Virginia
>Scotchie Glaze Compendium and hope you can help.
> I have never used pearl ash - potassium carbonate- K2CO3,
>molecular weight 138.2, and wonder if there is a substitute I could use
>instead.
> Then I came across the abbreviation PBX - could that be for
>some lead compound?Any help would be greatly appreciated. Mia in ABQ
PBX was a beautiful fireclay mined in New Jersey by APGreen years ago. It
was also called Valentine Fireclay. It required pre-screening to remove
lots of offensive stuff, but it fired to a beautiful orange color at cone
9-10. We used it in conjunction with also the now defunct and unavailable
Pine Lake Clay for supurb clay bodies at that temperature.
We have substituted Newman Red for this material and the results are fine.
Jonathan
Jonathan Kaplan
Ceramic Design Group
PO Box 775112
Steamboat Springs CO 80477
voice and fax 970 879-9139
jonathan@csn,net
http://www.sni.net/ceramicdesigin
June Perry on mon 10 jan 00
PBX was a fireclay that, to my knowledge, is no longer available.
Regards,
June
ababy sharon on mon 10 jan 00
I am sure you can buy it in a laboratory supply house .I have pearl ash
and use some times when I cannot have the right amount of potassium in
better ways.
Ababi
sharon@shoval.org.il
http://www.israelceramics.org/main.asp?what=gallery
http://clay.justnet.com/cgallery/asharon.htm
----- Original Message -----
From: Wade Blocker
To:
Sent: Sunday, January 09, 2000 06:45
Subject: pearl ash
> ----------------------------Original message----------------------------
>
> Dear Glaze Gurus,
> I have been puzzled by a couple of things in the Virginia
> Scotchie Glaze Compendium and hope you can help.
> I have never used pearl ash - potassium carbonate- K2CO3,
> molecular weight 138.2, and wonder if there is a substitute I could use
> instead.
> Then I came across the abbreviation PBX - could that be for
> some lead compound?Any help would be greatly appreciated. Mia in ABQ
>
clennell on sat 27 may 06
Hey gang. The clay supplier is closed for the weekend and I'm needing
potasium carbonate(pearl ash) to reconstruct a synthetic version of a beech
ash i once used.
Is pearl ash something you can buy at the hardware store- i read it was used
for soap making and such.
Thought I'd get a quicker answer here at at Clayart U.
Thanks a bunch.
Tony
Tony and Sheila Clennell
Sour Cherry Pottery
4545 King Street
Beamsville, Ontario
CANADA L0R 1B1
http://www.sourcherrypottery.com
pdp1@EARTHLINK.NET on sat 27 may 06
Hi Tony,
A fast refresher here amid the clutter of books
that can be got to, seems to indicate...
...basically a Carbonate of
Potasium, specifically a Bicarbonate of Potasium,
derived from Wood Ash...or at one time from
roasting Sea Weed till only ash remained.
Also from
relying on the solution of approximately dissolved
matter in
Water in which Hardwood or Sea Weed Ashes have
been soaked,
pouring off the water, then evaporating or boiling
off the Water.
Or by baking or calcineing Pot Ash.
The small crystals remaining were then the Peral
Ash as distinct from Pot Ash.
Was also used in Baking at one time as a
leavener...
Also known sometimes as Salts of Tartar ( not to
be confused with Cream of Tartar which has
Tartrates in with Bicarbonates of Potasium)...
Used in some Baking, washing Wool, Some Soap
making, some Candle making, Paint manufacture, and
Ceramic Glazes...
Good luck..!
Phil
Las Vegas
----- Original Message -----
From: "clennell"
> Hey gang. The clay supplier is closed for the
weekend and I'm needing
> potasium carbonate(pearl ash) to reconstruct a
synthetic version of a beech
> ash i once used.
> Is pearl ash something you can buy at the
hardware store- i read it was used
> for soap making and such.
> Thought I'd get a quicker answer here at at
Clayart U.
> Thanks a bunch.
> Tony
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