There's a Better Way: Minimize Circular-Saw Tearout
This zero-clearance circular-saw base ensures the edges of your plywood cuts stay clean
If you want to avoid tearout on the edges of your plywood cuts (and for finish projects, who doesn’t?), do what Tom Walter of Alexandria, Va. did. Build a base for your circular saw from a ¼-in piece of scrap hardboard and adhere it to your saw’s baseplate. In this video, Chuck Miller demonstrates Tom’s method for preventing tearout and producing a smooth, clean cut every time.