Alisa Liskin Clausen on sun 22 oct 06
Dear Clayart,
Sometimes when I make a glaze test from a recipe, I think, I think I have
tested this before.
I am coming to the conclusion that if I have tested 1000 recipes, I have in
reality only about 300 different recipes. Sigh. But the learning continues.
Just in the last batch I just posted, I found the recipes that were nagging
me.
The Barium Blue is the same, slightly adjusted amounts, of the Turquoise Mat
I have on my site, because
I tested it a few years ago, and use it.
Cartwright Black is a slightly tweaked version of Glossy Black, that was
published in CM Sep. 2005, Jayne Shatz article.
If I had the time and gumption to return to all of my glaze test pages, I
may find a pattern.
I liked what Peter Pinnell said in his last column in Clay Times "As far as
I know" column in the Vol. 12, nr. 5. "There are two rules you'll have to
follow if you want to better understand glazes. You must mix, apply and
fire a lot of different glazes; and the second is that you must pay close
attention to the results"
To get to know materials you have to make a lot of tests.
I think it helps not be hysterical about gram splicing, such as an amount
like 23.3 gr. Try running the recipes through a glaze calc. program after
you round up the percents. You may notice no great change in the formula.
I round up and down to the nearest half gr. because I cannot weight one
third of one 10th. This is not to say to get sloppy, I mean make your recipe
approachable, especially for beginners. All this makes for a lot of good
experience
and good learning.
I just wanted to put that to bed as well, because I thought I saw those
recipes before. So many recipes get slight additions or revisions and
appear with a whole new name. I wish I could remember them all and save
myself some time, but then, I wouldn't have the two test tiles to compare.
That is a big part for me.
Regards from Alisa in Denmark
Mert & Holly Kilpatrick on sun 22 oct 06
>Alisa Liskin Clausen wrote:
>
>Sometimes when I make a glaze test from a recipe, I think, I
>think I have tested this before.
>I am coming to the conclusion that if I have tested 1000
>recipes, I have in reality only about 300 different recipes.
>Sigh. But the learning continues.
>If I had the time and gumption to return to all of my glaze
>test pages, I may find a pattern.
I use GlazeChem, and it has a feature "Find Similar Glazes" where you can
select a variety of characteristics by which to compare the glazes (mole.
Formula, recipe ingredients, etc.) and it will find the 10 closest (or 15 or
whatever you indicate) glazes. It will tell you the % match, so if they
come up 100% or 99% you know it's the same glaze with another name. Very
useful feature.
Holly
East Bangor, PA
Alisa Liskin Clausen on mon 23 oct 06
>
>I use GlazeChem, and it has a feature "Find Similar Glazes" where you can
>select a variety of characteristics by which to compare the glazes (mole.
>Formula, recipe ingredients, etc.) and it will find the 10 closest (or 15
or
>whatever you indicate) glazes. It will tell you the % match, so if they
>come up 100% or 99% you know it's the same glaze with another name. Very
>useful feature.
>
>
Hi Holly,
That would be a great feature for comparison. I assume it compares the
glaze recipes you have entered, and after that, it has a data base to work
with. Right now, my data base is my memory, but if I look into new
software, I would certainly like to have to that feature. On the other
hand, I like looking over the recipes in my handwritten notes because I
always see things that I had not before and can remember glaze features
that I otherwise forget. If I get too computerized, I will forget things,
like the phone number of my travel agent which is now just one key in my
home telephone. The telephone in the airport did not have that key and I
had to really push my resources to remember it!
However, that feature is certainly a useful one for scanning recipes and I
would like it very much if I change softwares.
Thanks for the tip, regards from Alisa in Denmark
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