Kerf Marks the Spot On Radial-Arm Saws
I got tired of always hauling out a protractor or adjustable triangle when I wanted to set my radial-arm saw at an angle.
I got tired of always hauling out a protractor or adjustable triangle when I wanted to set my radial-arm saw at an angle. So, I notched the most frequently used angles on the saw's particleboard top to make setting up the saw a snap.
To mark a particular angle, I raise the blade above the table and pull it forward as far as it will go. Then, I set the angle of the blade with an adjustable triangle and lock the arm. With the saw running, I lower the blade until it makes a 1⁄8 "-deep kerf in the tabletop.
Whenever I need to repeat that angle, I pull the blade forward and turn the saw arm until the blade lines up with the kerf. I lock the arm and push the carriage back before making my cut.
—Rob Nusbaum, Toledo, Ohio