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

Comments Discussions Members

A few hundred glaze recipes for Ye"all

by Lawrence Weathers

Feb 11, 2017

I found that I had a 2013 glazechem database.There are hundreds of recipes. I extracted the recipes for you folk. The files were so large that this software would not accept even one of them as attachments. So, I put them on google drive. The links to download these .html files are below. Your browser should let you view them.
 
Raku
https://drive.google.com/file/d/0B74t5cHBHat2TFBSRlE0LTRVVm8/view?u...
 
Midfire
https://drive.google.com/file/d/0B74t5cHBHat2LUFRdF83T0dsc2c
 
Highfire
 https://drive.google.com/file/d/0B74t5cHBHat2Q3RhSmxGSFhLUHc/view?u...
 
LowFire
 https://drive.google.com/file/d/0B74t5cHBHat2QnRYck9xLUQ0cnc/view?u...

  • up

    George Lewter

    Thanks, Lawrence. One thing people should understand, is that there are many thousand recipes out there, online. I would rather see two extensively documented recipes (photos on different clays, thickness info, known issues and solutions, firing suggestions, etc.) than two hundred bare recipes.

    Actually, Now that I've looked at some of the mid-fire recipes you posted, the batch is better documented than most of the recipe lists that I have found over the years, but still totally lacks any the photo documentation that we are capable of handling here, and on the Insight-live glaze database.

    If you follow the links to Lawrence's recipe files, you have to scroll down quite a distance to get to the actual recipes. The first few pages are filled with list formatting code for database records (recipes). (Please correct me if that is incorrect.)

    Feb 11, 2017

  • up

    Elena Kreinin

    Thank you Lawrence for posting this recipes, I found many mid range older formulations that I was looking for. Going to test quiet a few. Elena

    Jun 21, 2017

  • up

    Lawrence Weathers

    Please also post your test results to www.glazy.org

    Jun 21, 2017