Thank You. It looks like all these machines are huge, commercial size robots. They are certainly great; though, outside of my scale for now. I am looking for a desktop size, portable. Milling is fun!
I just thought of a solution - a small bath tub could be built for a piece of stone, and I am talking of milling small stones the size of a big coin, to hold water, so that the stone would be submerged in water, while milled, the bath would be mounted directly on the milling bed. This makes me think of two problems though - 1) the milling tip would splash water all around, and/or 2) if the bed was moving instead of the tip, water would spill with the movement, or both. These are likely to happen; though, I could work around with it. That said, even simple CNC machine could work on stones. This is only theory for, I do not know of any small CNC machine. Thanks again.