Can I use other saw blades with the Plunge Saw?
Kreg recommends always using a genuine Kreg® saw blade with the Plunge Saw. The saw requires a blade that measures 6 1/2" (165mm) diameter and has a 20mm-diameter arbor hole. Most standard circular-saw blades have a 5/8" arbor hole that is too small to fit the arbor on the Plunge Saw.
If you choose to use a blade from another track saw, it must also have a kerf thickness (tooth width) of 2.2mm or greater. Blades with a kerf thickness less than 2.2mm will not allow the Plunge Saw riving knife to operate correctly.