I use lapidary blades on a wet tile saw. My MK 470 saw has an overhead blade and you can vary the depth of cut by adding spacers to the sled. I also have a QEP contractor-style saw that cuts from below and is good for thinner murrini bars. You are a bit more limited in cutting depth with this saw. I'm using MK Diamond Saber 1000 lapidary blades on both saws at the moment. They have a 250 micrometer kerf and work better if you add a set of blade stabilizers that you can get at any good woodworking store. ProSlicer blades are good, too. When buying blades be sure that they are water cooled. Some lapidary blades are oil cooled and a PITA to work with. Many of the saws are made for 7 inch blades and the thin lapidary blades come in 6 in diameter, making the MK saw a lot easier to manage with bigger pieces. Be sure to wear face and respiratory protection when wet cutting as the mist you generate contains tiny shards of glass that you do not want to breath.
Director for Bead Donations
Beads of Courage, Inc.