Blue grains from “sintered ash”: Part 1

By Hideo Mabuchi / Stanford University

One of the neatest features of a Kazegama firing is the opportunity to observe the magic effects of Steve’s “sintered ash” on pot surfaces.  The sintered ash is obtained by sieving the largest chunks from a batch of wood ash, and a pile of sintered ash can be used as a refractory bedding under a pot, in place of the usual wadding.  Generally the part of the pot that has lain in/near the sintered ash picks striking up blue and even lavender colorations; this can be especially nice for side-fired tall forms like vases, bottles or pitchers. (To see more, go to Firing the Kazegama and scroll down to the “Sintered Ash” paragraph). Continue reading

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