How to Choose a Straight Edge for a Circular Saw
Ask This Old House general contractor Tom Silva demonstrates some techniques for cutting straight edges with a circular saw.
- Measure the offset of the circular saw guide to the blade. Mark whatever is being cut at the desired length, plus the offset.
- Use a straight scrap piece of wood and place it on the measurement. Run the saw along the scrap piece of wood and the cut should be straight.
- With a track saw, simply place the track along the desired length mark, offsetting for the thickness of the blade, and run the saw across the track.
- Circular saws can also be converted to track saws using a guide system. It comes with a jig that can be attached to the bottom of any saw.
- Make a track using two pieces of plywood. Cut one piece of plywood to be about 2” wide and glue it on top of the other piece.
- Run the circular saw alongside the scrap piece on both sides. This will create an accurate guide accommodating the required offset for each side of the saw.