Paul Borian on tue 17 jun 08
The last time I bought cobalt oxide I paid $29/lb from Westerwald
Pottery, but they don't sell it anymore. Does anyone know where to get
the best price on a few pounds?
Thanks,
Paul
Steve Mills on wed 18 jun 08
Wherever you do get it, ALWAYS test before commiting it to a glaze. Ceramic Grade Oxides are notoriously variable in purity and therefore strength.
Steve
Bath
UK
--- On Tue, 6/17/08, Paul Borian wrote:
From: Paul Borian
Subject: best prices on cobalt?
To: CLAYART@LSV.CERAMICS.ORG
Date: Tuesday, June 17, 2008, 11:45 PM
The last time I bought cobalt oxide I paid $29/lb from Westerwald
Pottery, but they don't sell it anymore. Does anyone know where to get
the best price on a few pounds?
Thanks,
Paul
Patty Kaliher on wed 18 jun 08
Try uspigment.com. they are located in Illinois and fill orders and ship
quickly. Prices are on the website. I paid $35 for 1# of Cobalt carbonate.
-----Original Message-----
From: Clayart [mailto:CLAYART@LSV.CERAMICS.ORG] On Behalf Of Paul Borian
Sent: Tuesday, June 17, 2008 7:45 PM
To: CLAYART@LSV.CERAMICS.ORG
Subject: best prices on cobalt?
The last time I bought cobalt oxide I paid $29/lb from Westerwald
Pottery, but they don't sell it anymore. Does anyone know where to get
the best price on a few pounds?
Thanks,
Paul
Larry Kruzan on wed 18 jun 08
Given the high price of "cobalt blues" (sorry David :O) from Carbonate I wonder if buying Oxide is not a wiser choice? Doesn't it substitute at 2.5/1 with a cost of $35/$50?
There are some drawbacks such as a risk of speckling but I've been using it for a couple years without too many issues.
Larry Kruzan
-------------- Original message --------------
From: Patty Kaliher
> Try uspigment.com. they are located in Illinois and fill orders and ship
> quickly. Prices are on the website. I paid $35 for 1# of Cobalt carbonate.
>
> Paul
Des & Jan Howard on thu 19 jun 08
Larry
In our neck of the Oz woods, current prices are:
Cobalt oxide A$79.75/250 gm
Cobalt carbonate A$49.90/250 gm
Cobalt silicate A$22.90/250 gm
Guess which one we are buying lately?
The silicate replaces the carbonate form 1:1,
additions to glazes of 0.5% to 2% have shown
no difference in appearance.
I don't know where the silicate comes from.
Des
Larry Kruzan wrote:
> Given the high price of "cobalt blues" (sorry David :O)
from Carbonate I wonder if buying Oxide is not a wiser choice?
Doesn't it substitute at 2.5/1 with a cost of $35/$50?
>
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