Rex Johnson Posted September 27, 2017 Report Share Posted September 27, 2017 I know this is a bit innocuous but.. I'm looking for a opaque white matte feldspar glaze we use to use as a base back in junior college. Cone 10. Basically I remember feldspar based which was super white and we added cobalt to make blue and rutile to make that goldish ocher color. Seemed very stable, except if over fired it would run, but it worked well over a splash of iron oxide glaze underneath with finger marks. I would break on lines and ridges well. Sometimes it would go glassy if pooled in a nook if thick and fired hot. Any suggestions? similar look >>> Link to comment Share on other sites More sharing options...
Rex Johnson Posted September 27, 2017 Author Report Share Posted September 27, 2017 Nevermind, I think I found what I'm looking for. Not a felspar glaze but the surface I was describing. Δ10 Oxidation, Reduction White Salt Nepheline Syenite (Theoretical) 71.6 Dolomite 23.6 Kentucky OM #4 Ball Clay 4.8 Total Base: 100 Zircopax 18 Bentonite 4 Rutile 1.1 Total: 123.1 Link to comment Share on other sites More sharing options...
High Bridge Pottery Posted September 27, 2017 Report Share Posted September 27, 2017 What do you mean by a feldspar glaze? Link to comment Share on other sites More sharing options...
Callie Beller Diesel Posted September 28, 2017 Report Share Posted September 28, 2017 That white salt glaze is super soft. Not enough silica or alumina. It scratches really easily. But it's sure pretty. Link to comment Share on other sites More sharing options...
Rex Johnson Posted September 28, 2017 Author Report Share Posted September 28, 2017 I meant a glaze with primarily a lot of feldspar. However the salt glaze 'looks' like the surface I'm trying to describe, though no feldspar in that one. The glaze I used for years in my previous life had this surface VVV. Maybe I should dig out all my old journals buried in the rafters Link to comment Share on other sites More sharing options...
High Bridge Pottery Posted September 28, 2017 Report Share Posted September 28, 2017 This is why I am confused, is Neph not a feldspar for you? I thought it was. Link to comment Share on other sites More sharing options...
Guest JBaymore Posted September 29, 2017 Report Share Posted September 29, 2017 Technically, Neph Sy is not a 'true' feldspar. best, .................john Link to comment Share on other sites More sharing options...
Callie Beller Diesel Posted September 29, 2017 Report Share Posted September 29, 2017 Just remembered this glaze, and I think it might fit your needs. It's pretty plain by itself, but it layers with other glazes really beautifully. Be mindful of creating eutectic runs, though. Turner's Beauty ^10 30 Custer Feldspar 20 EPK 22 Dolomite 20 Spodumene 6. Tin oxide 2 Whiting Note: the last time I used this was in the 90's, so the formulation for Custer was different. It may need to be rewritten, given the chemical shift of that particular material over the last few decades. Test this version first, and if it doesn't work, message me and I'll run it through my Insight. Link to comment Share on other sites More sharing options...
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