Is it easier to convert a cone 6 glaze to cone 10 than doing the opposite? I don't have mid range clay bodies available in my country (let alone porcelain), but I have a couple SiC glazes I would like to try. What do you think?
Which reminded me of an early paper on local reduction. (ref in https://community.ceramicartsdaily.org/profile/34897-peterh/ )
One of the most interesting ideas was the use of a SiC containing under-glaze (or IIRC body) which then influenced the colour of a SiC-free glaze applied over the bisqued piece.
- They give under-glaze/glaze combinations for copper reds at cones 012 and cone 9.
- They suggested that silicon carbide achieves reduction-effects over this remarkably wide range by