A worm drive circular saw is one of the most versatile power tools you can own. Not only can you crosscut lumber for framing, you can rip plywood. However, ripping plywood can get tricky if you don’t have the right guide. They currently sell “rip guides” that are typically 12 inches with a “T” shape that attaches to your circular saw. While these are relatively cheap and convenient, they aren’t the best for making reliable, straight cuts. Making your own rip fence jig is the key to keeping it professional.