TS Smooth 1220-1270c porcelain There is no problem with

There is no problem with copper in leadless glazes

After the session

This rich cobalt glaze breaks deep blue where thinner

This fascinating book includes breathtaking images of finished pieces

TS Smooth 1220-1270c porcelain There is no problem withClay Description A superb plastic clay, excellent for throwing as well as machine making, imparts good thermal shock properties to domestic ware. This blend of ball clay, china clay together with fine quartz and flux fires to an off white ivory colour. Technical Specification Physical Data Firing Range T EXPN @ 500C Total Shrinkage Fired Colour Texture 1=smooth 10=course TS 1220 1270C 0. 322 12. 5 off white 5