I am comparing 6 well known cone 6 fluid melt base glazes and have found some surprising things. The top row are 10 gram GBMF test balls of each melted down onto a tile to demonstrate melt fluidity and bubble populations. Second, third, fourth rows show them on porcelain, buff, brown stonewares. The first column is a typical cone 6 boron-fluxed clear. The others add strontium, lithium and zinc or super-size the boron. They have more glassy smooth surfaces, less bubbles and would should give brilliant colors and reactive visual effects. The cost? They settle, crack, dust, gel, run during firing, craze or risk leaching. In the end I will pick one or two, fix the issues and provide instructions.
Pages that reference this post in the Digitalfire Reference Database:
Li2O, B2O3, SrO, ZnO, G3806C - Cone 6 Clear Fluid-Melt Clear Base Glaze, Two transparent glazes on the same dark burning clay. Why different?, Base Glaze, Reactive Glazes, Melt Fluidity, Glaze Bubbles, Transparent 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.