To solve the problem that it is difficult to perform long size cutting in do-it-yourself or in-the-site work, in order to cope with an increase in chances for using standard size laminated plywood or the like in do-it-yourself, woodworking, or construction interior site, and it is more difficult to perform precise cutting with an increase in length although a hand electric circular saw is generally used, in contrast to the case of using a large panel saw in a furniture factory or the like in which long size cutting is easily performed.

An electric circular saw is integrated with an electric slide rail. A portable electric slide saw includes a guide allowing cutting at right angles, an integrated switch for saw tooth rotation and saw slide, or the like. In a general panel saw, a cutting guide is fixed, and plywood or the like is placed and positioned to cut it. These are basically for cutting at right angles. In accordance with the portable electric slide saw, the slide rail is provided with a perpendicular guide bar, an operator places the slide rail on the plywood at the cut position of the plywood, brings the guide rail into close contact therewith to perform alignment at right angles, and fixes the plywood by a clamp to cut the plywood.