This article will serve as a primer for novice carpenters and as a refresher course for veterans. There's much more to learn about circular saws than will fit here, but I urge you to learn the basics first. 20 ft. in the air. The biggest factor that affects the performance of a circular saw is choice of blade. Before you start cutting, let's talk about safety.
Circular saws can cause serious damage with eye injuries and cuts being the most common.
My employees all wear good-quality safety glasses whenever they're using a circular saw. Most injuries from circular saws occur when the sawblade binds in the cut and the saw kicks back toward the operator. Having the blade at the proper depth limits the area of the blade that's in the kerf. It also exposes less of the blade if the saw kicks back. A number of situations can cause a saw to bind and kick back.