David Hendley on thu 1 apr 99
The "syringe method" is also great for doing tri-axial (3 glaze)
blends. I use a triangle like this, where A,B, & C are the three
glazes and the numbers represent "syringe-fulls" of glaze.
Start with 200g batches of glazes and prepare the glazes as Peter
outlines below.
I use a standared syringe, and a "syringe-full" is about 5cc,
so you end up with about 25 cc in each cup, just the right amount
for dipping a test tile. Double dip the top quarter of the tile.
5A
4A,1B 4A,1C
3A,2B 3A,1B,1C 3A,2C
2A,3B 2A,2B,1C 2A,1B,2C 2A,3C
1A,4B 1A,3B,1C 1A,2B,2C 1A,1B,3C 1A,4C
5B 4B,1C 3B,2C 2B,3C 1B,4C 5C
David Hendley
Maydelle, Texas
hendley@tyler.net
http://www.farmpots.com
At 02:00 PM 3/31/99 EST, you wrote:
>----------------------------Original message----------------------------
>Folks,
>
>Here's a quick and easy way to do a thorough line blend test of two
>glazes. Over the weekend we hosted a glaze workshop with Angela Fina,
>Glaze Maven of the East. This is one of the tests that she gave us to
>try.
>
>The line blend of two glazes is as follows:
>
>Dry mix 100 grams of each of the two glazes. Put them into clear plastic
>cups and add water to each until the level in each cup is equal. Label
>"Glaze A" and "Glaze B". She says that if one is thicker in consistency
>than the other that it doesn't matter. The important thing is to have
>two cups with the identical amount VOLUME-wise in each one. This is a
>percentage test that relies completely on volume to be accurate so make
>sure those cups are the same.
>
>Next, put out nine plastic cups and label them 10 glaze A /90 glaze B,
>20 glaze A /80 glaze B, etc. You will have nine total.
>
>Now, you will need a large syringe without the needle. She got hers from
>her vet. Suck up 2 cc of glaze A and put it into the first cup. (You
>will need to tap the syringe to dislodge air bubbles and purge them just
>like in the doctor's office before adding to the cups.) Put 4 cc in the
>next cup and 6 in the next. And so on until the last cup which will get
>18cc. Clean the syringe and go to Glaze B. Draw 18cc and add to the
>first cup to make 20cc of volume. Add 16cc to the next and so on down
>the line.
>
>All cups will have 20cc except the parent cups which will have almost
>nothing left in them. This is pretty quick and easy once you get going
>and allows you to do much more than simple overlaps. Angela says that
>she has gotten some of her best glazes this way. I don't know how to
>figure out the percentages at the end if you do find a combination that
>you like, but I'm sure it can be done.
>
>She paints the samples onto tiles doing four stripes with 4,3,2 and 1
>coats on the stripes to show different thicknesses. For sometimes
>dramatic results she recommended doing this test with two quite
>dissimilar glazes.
>
>The tests that I'm doing will go into the kiln tonight so by Friday I
>should have something interesting.
>
>--Peter Atwood
>Get Your Private, Free Email at http://www.hotmail.com
>
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