Circular saws are the workhorse of the carpentry world. Their invention revolutionized the industry and allowed contractors to build a house in a third of the time required with the old manual saws. Circular saws also opened up carpentry to do-it-yourself types who just did not have the time or energy to do large projects manually. From framing to finish work, the circular saw can do it all with a quick change of the blade. To change a blade, all you need is a couple of tools and a few minutes for this simple procedure.
Disconnect your saw from any power sources and lay the power cord onto your work bench. Set your saw onto the work bench with the blade hanging off of the side. Hold the saw securely to the bench by the operating handle.