I often have problems with crawling, I have been reading about adding adding a small amount of Veegum CER or CMC to glazes to help them adhere to the clay, has anyone had else tried this or have this problem?
I make sure there is no dust on my greenware pots but wiping them with a clean sponge before glazing (I dip glaze, not brush on).
I've been experimenting a lot with layering glazes, and getting some really lovely results, but often at least a few mugs or 1 bowl out of a set will have crawled! Very frustrating, and I feel I can't go on loosing 20-30% of each kiln load. Sometimes I've found things that are in the middle of the kiln shelf are more likely to crawl which seems odd! I go up to 1230.
One of the main glazes I use is Amaco Tourmaline which I put on top of an oatmeal or ironstone. Any advice appreciated!