Funny you should mention that! I have been wanting to try that since ordering my Glowforge. However what I was thinking was that once the clay reaches 800F it becomes metasilicate and will no longer soften in water so if the engraved clay was soaked, then everything that did not reach metasilicate would soften and wash away, leaving what could be an amazing bit of delicate work that could then be glazed and fired. There are a number of Issues I can imagine, but only testing would tell. I would, however, flatten the clay between two sheets of light paper as the operation could toss loose bit away with the fan and the paper would hold on to those parts that were not hit with the laser.
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