Excerpt: Listed below are some cone 10 reduction glaze formulas recently used at ASU. Several I modified and tested, several were developed by students in Kurt Weiser's ceramics classes, and some are ASU studio glazes. If you adjust the formulas, please let me know about your results. If you use the formulas, I'd like to see digital images of your favorite results. Inquiries welcomed. The ASU cone 10 reduction kiln is a 70-foot, downdraft, gas-fired car kiln.