The reason I decided to switch to cone 10 reduction vs cone 6 oxidation was to limit the amount of materials I have to buy (and ship) and to reduce the amount of physical labor I have to use to process and mix clays. It’s been a HUGE learning curve and a lot of testing.
This is my local, hand dug high fire red clay. It is only screened through a window screen (much less screening than my usual process) and has 10% added Mahavir Feldspar. It’s got 1% absorption at cone 10 Reduction (plus just a hair). Not only that, but it’s actually working in reduction, which was not a guarantee. Many red clays do not do well in reduction.
The glazed piece is the same clay, but it only got to cone 8. The glaze is 78% local. I’m really looking forward to seeing how the glaze preforms at higher temps.