Clamps ensure the rail doesn't move during the cut and are especially useful when ripping through thicker wood. You might expect that positioning a circular saw on the guide rail would involve ...

First, we show you how to attach a simple guide rail to your circular saw for precise cuts. Next, we demonstrate how to adjust the saw for plunge cutting, allowing you to make deeper cuts safely.

When I moved a few years ago, I parted ways with my 15-year-old table saw ... when you need to cut a long board or sheet, just align your cut marks with the edge of the guide, clamp the guide ...

your basic circular saw can make furniture-quality cuts, too. Combine your sweet sidewinder with any sort of straightedge clamped to the work, or better yet a cutting guide like this one ...