The ProCut is a great idea. Wish I had it years ago. Did not try it with a right bladed circular saw since I now only use worm drive saws. It still works with a worm drive but there is only a small amount of procut bed under the saw. As a result you have to hold the saw up on the bed of the ProCut with a slight CCW twist of the wrist. Once you make your first cut the ProCut is customized for that saw.
Circular Saw Cutting Guide:
When rough cutting, a good craftsman can follow a pencil line. An accurate straight cut requires a straight edge clamped to the material to be cut. This items attempts to shortcut that process and just doesn't work. Because it's a one item fits all device, it first has to be cut to fit your circular saw. The problem is that it has a minimal edge to support the circular saw when starting the cut, so you frequently start off in the wrong direction. Despite its being made from plastic, there was a lot of... more info
Great Tool:
I ordered this guide some time ago, but did not have a particular need at the time. However, I just obtained a job that required the cutting of several 2x 12 boards. The guide worked great and I was able to cut the boards accurately and straight with little effort. All shop should have one!
Great little tool!:
To the person who said, "why?"
Because not all of us want to take the time to measure, set up clamps to hold a straight edge, just to have it slip. The directions are simple. A novice can use it. It cut down my time to make cuts by at least two-thirds. I would recommend this to anyone who doesn't look down their noses at items to make woodworking easier!