3rd Week November, Wood Stove

I tiled the stove pad over vacation before we put in the wood floor. Then Stephen made some trim for around the tile a couple of weeks later. I cut the trim with the miter saw and installed it, then taped it up and grouted the marble tiles. Why doesn't a miter saw ever cut angles precisely? After I took off the tape and sanded, I carefully stained and polyurethaned the trim with a little brush.  Then I sealed the tiles and we moved the stove onto the pad. We had the stove pipe professionally installed last Thursday, and we used it on Tuesday.