Angela Davis on sat 30 aug 08
I have finished doing a 72 hour vinegar test on some of the cone 6
iron glazes I've been mixing.
The Hg5 commercial iron glaze from Minnesota Clay passed with no
acid effects.
The Bailey's iron with 15% rio also passed.
The original Randys red had a small amount of acid etching visible.
Randys Red/Touchstone that I revised using Nephy sy and the special
rio had significant acid etching.
My revision that added 5% bone ash to the above combination came through
beautifully.
All glazes felt smooth to touch in the etched areas. They were placed =
in the vinegar
head down, you can see the etching across the top .
You can view the tiles here;
http://www.flickr.com/photos/7457150@N05/
Am I correct to assume that the addition of the bone ash allowed a more =
through
melt making the glaze more durable?
Angela Davis
In still soggy Homosassa
Randy McCall on sat 30 aug 08
Application of Glaze?
Just one dip, two, how many?
Randy
English Setters
members.tripod.com/~McCallJ/MCCALL2.html
Cotton Patch Pottery
members.tripod.com/~McCallJ/index.html
----- Original Message -----
From: "Angela Davis"
To:
Sent: Saturday, August 30, 2008 1:07 PM
Subject: Iron glaze acid test
I have finished doing a 72 hour vinegar test on some of the cone 6
iron glazes I've been mixing.
The Hg5 commercial iron glaze from Minnesota Clay passed with no
acid effects.
The Bailey's iron with 15% rio also passed.
The original Randys red had a small amount of acid etching visible.
Randys Red/Touchstone that I revised using Nephy sy and the special
rio had significant acid etching.
My revision that added 5% bone ash to the above combination came through
beautifully.
All glazes felt smooth to touch in the etched areas. They were placed in
the vinegar
head down, you can see the etching across the top .
You can view the tiles here;
http://www.flickr.com/photos/7457150@N05/
Am I correct to assume that the addition of the bone ash allowed a more
through
melt making the glaze more durable?
Angela Davis
In still soggy Homosassa
Angela Davis on sat 30 aug 08
I do one quick dip and when that has dried I dip the upper
1/2 to 2/3 for a longer hold to make a thicker layer near the top.
The glaze on the test tile with bone ash moved all the way to the bottom
of the first dip.
I'll be firing some layered glazes real soon Randy, I'll keep you informed.
Angela Davis
----- Original Message -----
From: "Randy McCall"
To:
Sent: Saturday, August 30, 2008 3:35 PM
Subject: Re: Iron glaze acid test
> Application of Glaze?
>
> Just one dip, two, how many?
>
> Randy
>
> English Setters
> members.tripod.com/~McCallJ/MCCALL2.html
> Cotton Patch Pottery
> members.tripod.com/~McCallJ/index.html
>
>
> ----- Original Message -----
> From: "Angela Davis"
> To:
> Sent: Saturday, August 30, 2008 1:07 PM
> Subject: Iron glaze acid test
>
>
> I have finished doing a 72 hour vinegar test on some of the cone 6
> iron glazes I've been mixing.
> The Hg5 commercial iron glaze from Minnesota Clay passed with no
> acid effects.
> The Bailey's iron with 15% rio also passed.
> The original Randys red had a small amount of acid etching visible.
>
> Randys Red/Touchstone that I revised using Nephy sy and the special
> rio had significant acid etching.
>
> My revision that added 5% bone ash to the above combination came through
> beautifully.
>
> All glazes felt smooth to touch in the etched areas. They were placed in
> the vinegar
> head down, you can see the etching across the top .
>
> You can view the tiles here;
>
> http://www.flickr.com/photos/7457150@N05/
>
> Am I correct to assume that the addition of the bone ash allowed a more
> through
> melt making the glaze more durable?
>
> Angela Davis
>
> In still soggy Homosassa
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