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brookst

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  1. Hello! I'm getting deeper into 3D printing ceramics, and am considering purchasing a de-airing pug mill to make loading clay easier and to reduce air bubbles (which cause mayhem). I do need fairly high water content in porcelain clay -- probably 23%, possibly as high as 24%. I've heard that pug mills don't like very wet clay and can fail to mix/pug, with the auger failing to drive wet clay through the de-airing and extrusion stages. But I have not been able to get specific guidance on how much water is too much. Pug mill vendors and 3D printer makers alike have pretty much said "it depends, it's hard to say," and I don't blame them... but I also don't want to invest that kind of money if it's unlikely to be a viable solution. So, my questions: Does anyone have hard numbers on maximum water content that still works in any particular brand of pug mill? Would flocculating too-wet clay make any difference in its mixability / puggability? Would adjusting plasticity higher or lower make any difference? Thanks!
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