Thursday, March 22, 2012

Sapphire Blue



The story of the Sapphire Blue

A few months ago I mixed a glaze by the promising name Sapphire Blue. I was surprised to find out that the glaze came out of the kiln actually green. I thought I probably made a mistake while 
mixing the glaze, by omitting the Cobalt Carbonate while talking on the phone or something.


original sapphire blue

I tried to mix the original one again, this time in a very small amount, and it did came out a  beautiful sapphire Blue.


Very happy, I made a whole new bucket of the first glaze, and changed the name to Sapphire Green.
This time it came out pale orange.

Therefore, I have mixed 3 more litters of the glaze,  repeating very carefully the original recipe; the Sapphire Blue.  If I can't get the Blue again, at least I'll have a beautiful green, but no, not me…
Yesterday I've started a Glazing day, this time with taking photos of every piece after every step, so I can track what I did, when the dishes come out of the kiln.








What a shame


when I looked over the photos I have found out that I used the old bucket with the wrong glaze again… the one that came out orange…
mean time, I have already glazed 6 pieces. 


and also two large vases


spots of the right glaze on top of wrong glaze

I did put some spots of the "right" glaze on top. Now I am waiting to see what a surprise  will come out of the kiln this time... 


5 comments:

Linda Starr said...

A glaze that can turn three different colors, how wonderful, but not when they don't turn out as you want them to.

Varda Sharon Kramer said...

I am not sure if it is a miracle glaze, or it is my own lack of concentration ...

Mark Smalley said...

I really sympathise..too often i leave bowls of glaze or slip lying around and quickly forget what I've put in them. And then there was my lavender glaze which worked great as a small sample, so I mixed up an enormous batch of it..but the results have been disappointing & nothing like the test.

corey@lfgpottery.com said...

Varda Sharon Kramer,

I believe I have tested and mixed the exact same glaze you are discussing in this blog. I too got blue in the small test but green in the 10-lb batch i mixed. I lovee the green and want to mix more but the subsequent mixes all turned out horrible and react as if they are not properly fluxed and/or stabalized. were you able to get the glaze to function in either the blue or green and if so what was the key?

varda sharon kramer said...

Thanks for visiting my blog.. I did get the Sapphire Blue as great glaze colored blue,but never actually got that beautiful green again...
see:
http://walkingbeyond.blogspot.co.il/2012/03/sapphire-blue-iii.html

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