I'm about to start a small kitchen remodel project and need some advice on cutting ceramic tile that is installed on a wall. I'd like to cut off 4 inches of tile where the wall intersects the counter top to install a new backsplash. I was thinking this would be a piece of cake for a Rotozip or a Fein Multimaster & a metal straight edge, but everything I've read so far says this is not an easy thing to do. Does anyone have experience doing something like this and if so any advice (tools/techniques etc.) would be appreciated.