How to Cut Straight With a Circular Saw The Family Handyman editor, Jeff Gorton, will show you how to make perfectly straight cuts with a circular saw. You will use this circular saw jig over and over again. - check more on my website
It's almost as fast as a saw and fits into tight spots where saws won't. To give the string a starting point, cut a shallow notch with a file or hacksaw blade. Then simply pull the string back and forth to slice through PVC or ABS pipe.