Quote Originally Posted by Lord Kitchener View Post
Well, the movable fence is the reference edge, so if it doesn't move accurately, if one end moves a little further than the other, then it won't be parallel to the cutting line. An edge that was at right angles wouldn't help if it was a narrow piece, for instance 565 x 80
With a screw on both sides both ends will move the same amount .. near enough. True narrow pieces would be more tricky to trim accurately.