in need of some thin slabs for two different projects I got a couple nice pieces of botswanna agate from a friend and casted them in plaster with some other goodies. The plaster works great as it helps line up the blade true before it real gets into the rough. I am getting 2mm thick slabs which is what I want. The frist two cuts were thick, but its singing true now. As you can see the difference in these two slabs.