I did a backsplash installation with glass tiles, 2' x 6'. Unfortunately some needed to be cut to a 1/4 of inch thick to fill in a space. No matter what I did the piece (1/4') would always crack. I was using a wet tile cutter with a brand new "glass" blade. To some suggestions I even try taping the tile, using hot water in the machine.
I believe it has something to do with the quality of the tile, because I tiled the washroom in the same house, also with glass tile. This time 2' x 2' tile, and I had no problem cutting that tile to a 1/4 inch.
Any suggestions anyone?
I would try laying down a sacrificial scrap piece of ceramic tile on the wet saw table, and then lay the glass tile that you're cutting on top of this. If you set your blade depth so that it will cut through the glass fully, but only score the ceramic tile (do not cut through it!), then the small glass tile cutoff will be fully supported throughout the entire cut. This usually works for cutting smaller pieces, when it would otherwise just fall or break off when you're 90% through your cut.
Hope that helps.
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