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Mixing Time
Mix the slip for several hours for best results. It is only by putting energy into the slurry that you can thoroughly wet every particle and extract the best performance. Less deflocculant may be necessary if the slip is mixed for a longer period. This is an advantage because some deflocculants, like sodium silicate, attack your molds and the less that you use, the better. After the slip stands overnight and is mixed for a few minutes the next day, it will usually cast better.
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Patricia Walters-Fischer |