tag:blogger.com,1999:blog-6638497050839732163.post8895475570011079981..comments2023-11-15T22:25:18.188-05:00Comments on North Carolina Clay Club: Soda Craze-y?Amy Wallerhttp://www.blogger.com/profile/04965597757961207665noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-6638497050839732163.post-38509203590111968892009-01-25T10:51:00.000-05:002009-01-25T10:51:00.000-05:00Thanks, June that's a good thought. Although I in...Thanks, June that's a good thought. Although I increased the lithium and silica, I didn't change the F-4 in the glaze, which was also contributing to extra soda. I didn't try adding more clay/alumina b/c I didn't want it get too matt since I want a hard glossy liner. But maybe adding a little bit more could help. Here's my recipe:<BR/><BR/>SS Base (honey version)<BR/>F-4 21.9<BR/>Stront. Carb 12.5<BR/>Grolleg 15.6<BR/>Silica 24.7<BR/>Lith. Carbonate .3<BR/>Frit 3195 6.3<BR/>Wollastonite 18.7<BR/>with iron 1<BR/>titanium 4Joy Tannerhttps://www.blogger.com/profile/01127174336658302937noreply@blogger.comtag:blogger.com,1999:blog-6638497050839732163.post-33691539919409576132009-01-24T20:04:00.000-05:002009-01-24T20:04:00.000-05:00Joy, what's the recipe? It may not have enough ing...Joy, what's the recipe? It may not have enough ingredient like whiting, magnesia, barium, and/or high alumina, etc, which help repel the effects of soda. <BR/><BR/>Lithium 3% or so can lower expansion as can added silica, but if you don't have enough soda repelling materials in the formula and you're hitting it directly with the soda, it's going to keep crazing.<BR/><BR/>Till later,<BR/>JuneJune Perryhttps://www.blogger.com/profile/03329664368684428965noreply@blogger.com