Cone 6 Fluid-Melt Transparent Glaze - Jackpot!

Tuesday 2nd July 2019

In 2015 I documented a project comparing common cone 6 insight-live.com/glossary/283">fluid-melt base glazes, picked a favourite (Panama Blue) and over-hauled the recipe to fix it's slurry issues and serious crazing. While fluid-melts almost run off ware when applied thick, they host stains & opacifiers to produce brilliant super-gloss surfaces. But the typical chemistry of these is susceptible to crazing, scratching and leaching. In 2019 I reformulated again, moving the thermal expansion down from 7.3 to an incredible 5.8 (the base can now survive a 325F-to-icewater test on our toughest-to-fit porcelain with no crazing). And it is melt-fluidity-controllable, durable (having 30%+ more Al2O3/SiO2) and sources Li2O, MgO and KNaO from frits. Follow the link here to see the entire history of this development effort (beware, there are multiple pages, each with many columns).

Pages that reference this post in the Digitalfire Reference Library:

2019 Development of G3806 melt-fluid low-expansion clear base glaze, Fluid Melt Glazes

This post is one of thousands found in the Digitalfire Reference Database. Most are part of a timeline maintained by Tony Hansen. You can search that timeline on the home page of digitalfire.com.