So I am a potter and currently have had a ton of success using my glowforge to create stamps. I have been thinking about using it to laser onto pre-fired clay (greenware). at that stage, the clay will be dry and the water evaporated.
Anyone have any thoughts on this? I have both porcelain clay as well as earthenware.
do you think you could do it on a wetter clay too - kind of the consistency of playdough?
Again, one way to find out, chances are the very surface and shalow subsurface water will be turned to steam and cause spalling of the clay. Water absorbs a tremendous amount of heat as it rises from liquid to boiling, a little water will take a lot of the laser energy.
I personally would be concerned about the wet clay and effects of that much moisture inside your GF, and weigh that against the benefit of lasering vs. stamping. I followed one of the links posted above, and the effect on wet clay was underwhelming. Stamps are much clearer.
Have you explored lasering glazed ceramics? I’ve done some on tiles with a colorful glaze and white clay, the results were crisp and beautiful. There’s a lot of potential there with much less risk.