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Notice that body has 10.5-15.8% crystalline quartz (or silica). This is not enough to prevent crazing in typical glazes, special measures must be taken to formulate a very low thermal expansion base glaze to work on this body.
This underscores a great reason to make your own casting slips. Start with L3778G. Its information page (the preceding link) is a page having dozens of links to help you understand every detail of making casting slips. When you make your own you make make it as white, as fast casting as your want. And with more silica so it will fit your glazes.
Why tio2. Try without to see.
Generated with a prompt for a crazed glaze on a slip cast mug
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