[Clayart] Combining glazes
pjlewing at comcast.net
Thu Feb 16 15:39:16 EST 2017
On Feb 16, 2017, at 8:39 AM, ronroy at ca.inter.net wrote:
Mostly muddy colors.
True. I was amazed when I made the switch from cone 10 reduction to cone 5 oxidation that the srap looked exactly the same- army green and shiny.
BUT… Don’t throw it away, don’t put it on your garden, use it. You’ve got a perfectly good glaze there. You can’t make it a lighter color, but you can make it a darker color.
I add 0.5% each cobalt carbonate and chrome oxide, plus 1.5% each iron oxide and manganese dioxide to mine and get a glossy black.
If you’re using any chrome at all, if you add some tin oxide to your scrap you could get pink.
Mix it half and half with a very opaque white glaze to get something like celadon in oxidation.
Mix it half and half with any clear glaze. Then add some copper carbonate for a deep green. Or add some cobalt carbonate for a more interesting blue than you can get with the cobalt alone.
In the future, if you keep two scrap buckets, one for iron glazes and one for non-iron glazes, the non-iron one often is a lovely blue-green. The Fe one is an evan darker army green than normal, so you make black out of that- you just don’t add as much Fe to it.
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the Clayart