Posted by John Britt

Leaching Help



I would like the opinion of my pottery peers as to the food safety of the following glaze:

SATIN BLACK

Redart 61.38
Neph. Sye. 35.00
Whiting 2.76
Dolomite 0.611
Soda ash 0.247

Cobalt carb 5.0

I have a hard time looking at the materials and deciphering if it's "stable." I did the vinegar test for 48 hours and saw no change in surface. mostly, i would like the consensus on using this on rims of plates.

Thanks for any feedback,

Nora
piddlerpots@gmail.com
Email Post

Comments

Mike Barber said…
This comment has been removed by the author.
February 5, 2010 at 4:37 PM
Mike Barber said…
Here is the unity for it, if that might help:
http://www.glazecalculator.com/recipes/11847/view.aspx
February 5, 2010 at 4:39 PM
Mike Barber said…
This comment has been removed by the author.
February 5, 2010 at 4:41 PM
Linda Starr said…
don't know aboout the food safety, but that is a beautiful combination with the green and love the satin black.
February 6, 2010 at 1:52 AM
mikpo said…
Since the glaze is not on the food surface I don't see much of a problem. An alternative would be to make a slip out of Redart and cobalt with perhaps a melter and other clay additions and use that on the rims under your glaze.
February 6, 2010 at 2:26 AM
Post a Comment