Abstract: A circular saw for more precise movement during cutting with a laser alignment system for projecting a maker onto a workpiece to align with a target line to be cut. The laser alignment system comprises a housing, a laser generator, an internal battery which can be replaced without the aid of a tool, a switch which can be independently positioned within the housing and be turned on or off independently or a switch which can be positioned near the main switch of the circular saw and be actuated together with the main switch. The laser line projected by the laser alignment aligns with the plane of a saw blade of the circular saw. Thus, the saw blade can follow the target line by aligning the laser line with the target line.

Abstract: A jig saw for more precise movement during cutting with a laser alignment system for projecting a maker onto a workpiece to align with a target line to be cut. The laser alignment system comprises a housing, a laser generator within the housing, an internal battery supplying the laser generator, a switch which is positioned within the housing and independent of the main switch to turn on and turn off the laser generator. Turn on the switch, the laser generator projects a laser beam onto the workpiece ahead of the blade in alignment with the plane of the blade. The operator only needs to align the projected laser line along a target line on the workpiece to attain the more precise cutting without concentrating his observation exactly ahead of the cutting blade.