You must test before you use it, at any scale. Raw materials, mined or man-made, are not consistent. Color, strength, particle size and chemistry can change from one bag to the next and from one supplier to another, even when the name on the bag stays the same. Before you use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.
VEE GUM T
VEE GUM T - is produced by the Vanderbilt Company, Inc. It is a super fine (colloidal) purified Bentonite (hydrated Magnesium Aluminosilicate). Like Bentonite, it is used as a plasticizer (in white clay bodies due to its iron-free make-up) and as a suspension agent in glazes (typically <2%; see also Bentonite).VEE GUM CER - is produced by Vanderbilt Company, Inc. It is a mixture of Vee Gum T and a medium viscosity Sodium Carboxymethylcellulose (SCMS). It is used in glazes to optimize the surface hardness of un-fired glazes, to stabilize viscosity, and to enhance glaze suspension.
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