Collaborate on building an online list of well documented glaze recipes, with application and firing methods. Strong photo documentation. Only glazes that are mature at cone 6 will be included.
Testing the glazes, and identifying their problems and fixing them. Also, if there are obvious issues just by looking at a glaze recipe (like high barium, insufficient clay to suspend or harden, too much feldspar (which causes crazing), too much clay (causing crawling, peeling), hard-to-get materials, non-specific materials, etc) then it needs to be fixed as part of the testing I would say.
Tony Hansen included links below to procedures for a few glaze tests that could be done. Another good one would be to appraise the rate at which it settles, how hard is the dry layer, the water content of the slurry, the viscosity, these could be measured with commonly available tools.
I'm setting up my new studio, mixing some glazes and get my first glazes unloaded. I was shocked at the Waterfall Brown as it wasn't anything like it had always been and I hadn't bought new chemicals. I was stumped until I finally realized that I had hit a 2 when it should have been a 3 when typing up the recipe. I had used Frit 3124 instead of 3134. I checked out how different it is with Glazemaster and decided to just play with this one for odd sculptural pieces and mix up a new batch of Waterfall Brown. For those interested this is what WFB looks like with Frit 3124. It has it's own charm.
Cone 6 Glaze Testing & Reporting
131 members
Description
Collaborate on building an online list of well documented glaze recipes, with application and firing methods. Strong photo documentation. Only glazes that are mature at cone 6 will be included.
Testing the glazes, and identifying their problems and fixing them. Also, if there are obvious issues just by looking at a glaze recipe (like high barium, insufficient clay to suspend or harden, too much feldspar (which causes crazing), too much clay (causing crawling, peeling), hard-to-get materials, non-specific materials, etc) then it needs to be fixed as part of the testing I would say.
Tony Hansen included links below to procedures for a few glaze tests that could be done. Another good one would be to appraise the rate at which it settles, how hard is the dry layer, the water content of the slurry, the viscosity, these could be measured with commonly available tools.
Links:
Thermal shock test
Melt flow test
Glaze hardness test
Glaze leaching test
Waterfall Brown with a typo.....
by Gina Skillings
Feb 23, 2018
I'm setting up my new studio, mixing some glazes and get my first glazes unloaded. I was shocked at the Waterfall Brown as it wasn't anything like it had always been and I hadn't bought new chemicals. I was stumped until I finally realized that I had hit a 2 when it should have been a 3 when typing up the recipe. I had used Frit 3124 instead of 3134. I checked out how different it is with Glazemaster and decided to just play with this one for odd sculptural pieces and mix up a new batch of Waterfall Brown. For those interested this is what WFB looks like with Frit 3124. It has it's own charm.