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Talc additions to RCS produce variegated silky matte surfaces (in 10-15% amounts) at cone 10R. What if titanium is also added? This triaxial blend shows what works.
Top tile #1: Pure Ravenscrag Slip (RCS)
Bottom left tile #7: 85% RCS, 15% Talc.
Bottom right tile #10: 95% RCS, 5% Titanium Dioxide. The addition of a little titanium further improves the effect as shown on #8 (88% RCS, 10% Talc, 2% Titanium) and #6 (90% RCS, 10% Talc, 3.5% Titanium). But too much titanium loses it (tile #9) and adding only titanium goes glossy brown. This shows that some TiO2 is good, too much and the effect is lost.
| Materials |
Titanium Dioxide
A super white powder used in ceramic glazes to variegate, opacify and moderate color. |
| Materials |
Ravenscrag Slip
A light-colored silty clay that melts to a clear glaze at cone 10R, with a frit addition it creates a good base for a wide range of cone 6 glazes. |
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