Q: I'm trying to make picture frames with a miter saw, but the joints aren't tight. Any way to fix that?
—Jim Morehouse, Crystal, MN
A: Bad miter joints on picture frames are caused by one of two things: Either the saw isn't cutting the miters accurately or, more commonly, the lengths of the pieces on opposite sides don't match. With these simple tricks, you can quickly determine the cause of your loose miters. By the way, these techniques also come in handy when installing mitered casing around a window or panel moldings on a wall.