G1216M

Recipe (Percentages)

Notes & Instructions

G1216M is a cone 6 transparent base glaze designed as a low-expansion alternative to G1215U. It utilizes raw talc to source MgO, offering a cost-effective, high-clarity finish. Technical characteristics: high melt fluidity, crystal-clear surface, and low crazing tendency even on high-expansion porcelain bodies. Application guidelines: Due to high melt fluidity, this glaze may cause bleeding with certain underglaze or overglaze stains, particularly cobalt-based pigments. If bleeding occurs, reduce stain concentrations or adjust the color medium. While the recipe uses 29% gas-producing materials, it fires clear; however, if micro-bubbles occur, substitute talc with Frit 3249. If solubility issues arise with Frit 3134 in the slurry, a blend of Frit 3134 and 3124 may be used. Compatibility notes: This glaze is formulated for porcelains and low-expansion bodies; use G1214M or W for stonewares to avoid excessive compression. If crazing persists on specific bodies, reduce KNaO content in favor of ZnO or Li2O.