Concrete forms

[Carey]

2 ways to cut tile on a curve, use a carbide hole saw, or, with a wet saw, cut lots of straight lines into the tile, approaching the curve you want (comb like) and then tap out the "teeth" of the comb. Smooth up the curve with the wet saw.

ehow dot com has a really good video on this, and it is the tutorial I used to stat on my tile cutting escapades.

Oh, and slate can have the annoying habit of layering off when you cut, so do not fall in love with the surface of the piece you are cutting....