Abstract: A method for precisely cutting a workpiece using a saw guide to guide a hand held power saw, the saw guide having a first upper sliding surface and an opposing flat lower surface connected by a first side surface, the first upper sliding surface being bounded on one side by an integral guide ridge, and bounded on the opposing side by a first side surface, provides for first customizing the saw guide to a power saw having a base plate with a side edge. The saw guide is customized by positioning the power saw with the base plate resting upon the first upper sliding surface and the side edge contacting the integral guide ridge, and sliding the power saw along the saw guide, thereby cutting off the first side surface and creating a side cutting surface having a lower cut indicating edge. Once customized, the saw guide can be used with the power saw to cut the workpiece, with the lower cut indicating edge indicating to the user precisely where the power saw will cut the workpiece.