John Post on tue 10 sep 02
One way to get glazes to run or flow is to use glazes that have different
fluxes in combination with each other.
If your first glaze is high in calcium, then by layering glazes over it that
have lots of magnesium, barium, boron, sodium, etc. you may create a glaze
that moves.
This is one of the reasons that when you mix all of your glaze test scraps
together it is often a runny glaze. When you have a large variety of
fluxes, the melting temperature is often lowered which leads to runny or
flowing glazes.
If you are comfortable with glaze calculation software you can look for
glazes that have different fluxes in them as a place to start...
Or you can just take the glazes that you already have and test them over and
under each other.
You may find you already have what you are looking for...
Cheers,
John Post
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