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A Fireclay/Goldart/Redart high-fire body for the artist who likes clay with color. In oxidation, RO-20 fires to a nice medium brown; while in a reduction fire RO-20 yields a pleasant reddish-brown. RO-20 can be used for hand-building, tile making, and throwing on the wheel. Contains 9% medium grog.
Firing range is cone 6 to cone 10
Shrinkage at cone 6 is 10.9% and at cone 10 is 12.5%.
Absorption at cone 6 is .6% and at cone 10 it is 0%.