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Triaxial with Stains (cone 6): click here
Glazy, the best online database for recipes, testing, and material information: http://glazy.org/
John Britt – Glaze Thickness or Specific Gravity: click here
John Britt – Making Test Tiles: click here
John Britt – Melt Tests (fusions): click here
Rose and Matt Katz: How to Calculate the U.M.F. click here
Description of UMF (Unity Molecular Formula) in glazes – John Britt: https://youtu.be/YNWdd6R6a4Q