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barium blue look glaze

updated fri 30 jul 04

 

Alisa Liskin Clausen on thu 29 jul 04


On Thu, 29 Jul 2004 05:43:00 +0000, lela martens
wrote:

> >Or, could there be a food safe glaze that looks identical to a barium? I
>have never heard of one that has `that look`, but sure would like to.
>Thanks, Lela
>


Dear Lela,
I recall a glaze from my univ. days that was a big secret. Henry's blue
glaze. He glazed everything with it. Now, in my wider experience, I know
it was Barium blue mat. I also want that (despite I have no mother in law
to suprise her with a bowl for hot acidic foods only.) Without Barium.
Ababi and I sometimes talked about Strontium sub. but in our tests, it
never produced the same good color effects as the Barium did. Or at best,a
close second, but not the same "yes".

As I have been testing Val Cushing mats, I found a blue that I think is
very good. However, in all of the many test tiles, with similar names, I
realize that I mislabled two of the test batches. I called the Smooth Mat
tests Smooth Mat Whitish and the Smooth mat Whitish tests were labled
Smooth Mat. I will make corrections to this in the archives soon.

However, I mixed up a larger batch of the test tile I liked, 3 times,
because I thought I was having the Big Batch trouble with this glaze. I
could not duplicate the test tile. Obviously now, I know it was because I
had mislabled the tests and was mixing up the wrong reicpe. I was
comparing all of the recipes and noticed the one with Zinc, which the other
recipes did not include. I thought, this must be the recipe that yields
the mat I am looking for, by virtue of the raw materials. It was a good
hunch, because that is how I realized my mistake.

So, now I have retestd the correct recipe. I am working on it, and if I
get it to point where I think it could work as as Barium Blue "lite" (using
the name that seems to mean something is taken out, on our supermarket
shelves), I will post it.

For the first time now I have caved in, and I am carrying back 10 lbs. of
Frit 3134 from NJ to home. I am rather bent on using local materials to
get what I need, however, I will use it for recipe tests containing this
Frit to compare to my Frit J. Then when I post test results, North
American Clayarters can see tests with their common Frit used.

A labor of love. For me and for my clayart friends. 10 lbs. of Frit 3134
has less calories than the boxes of cookies I would rather pack.


More from home,
regards from Alisa in Denmark

I am picking up my 10 year daughter today who has spent 5 weeks at the same
camp 10 year old Alisa went to, in the Catskill Mountains, with bunks,
lake, mosquitos, sports, bug juice and girlfriends. She had a ball.