This edge-guide works so well for breaking down sheet goods that I decided to dedicate a circular
Try your hand with a jig that delivers accuracy for left- or right-bladed saws.
Sometimes, it's easier to take the tool to the work than the other way around. For large built-in-place projects, such as a deck, a circular saw is worth its weight in gold.
Glue-joint-ready cuts don't require expensive tools.