Gerstley Borate 12.5%
Nepheline Syenite 56.3%
For the yellow, add 5% rutile. We also tested a green version of the glaze during the workshop, which was with 3.5% copper carb.
And, as you can see from the picture... once again, I dropped a kiln post and broke a rally nice yarn bowl... Oh well!
Oh! And about the baby birds:
My intention was to follow the baby birds as they grew an left the nest, but I missed about a week when my grandson had to have his appendix out. By the time I got back to the studio, the baby birds were long gone (the fledge in 14 days!). I was so disappointed!