In my days of preparing for making my own glazes I ran across many chemicals, various frits, fluxes, opacifiers and colorants. One chemical which stood out as being unique is Bentonite, because the only purpose I could find for it was to keep glazes from seperating.
Out of 5 test glazes, I used Bentonite on 3 of them, those three were very easy to apply and had a much more even covering of the glaze test container than the two glazes without Bentonite. For anyone making their own glazes, even if they are from a recipie, then I would reccomend dropping about 2% of the final weight into the glaze, it will make your life much simpler.
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