SketchUp Guru
Established Member
The issue of the riving knife being ineffective in conjunction with a dado set continues to come up. I can't see how a riving knife would make any difference when using a dado set. As I understand it, a riving knife is supposed to keep the kerf from closing up on the rising teeth at the back of the blade during a rip cut. A dado cutter isn't used for through cuts so there's no kerf to close up.
My experience has always been with a full length fence against which the stock bears until beyond the blade. Maybe the riving knife is used to keep the stock way from the blade with a short fence? I don't know.
From the Wikipedia: A dado is a slot or trench cut into the surface of a piece of machineable material, usually wood. When viewed in cross-section, a dado has three sides. A dado is cut across the grain and is thus differentiated from a groove which is cut with the grain.
From that definition, which is the one I learned years ago, The rip fence doesn't come into play anyway. Just nitpicking. :lol:
My experience has always been with a full length fence against which the stock bears until beyond the blade. Maybe the riving knife is used to keep the stock way from the blade with a short fence? I don't know.
From the Wikipedia: A dado is a slot or trench cut into the surface of a piece of machineable material, usually wood. When viewed in cross-section, a dado has three sides. A dado is cut across the grain and is thus differentiated from a groove which is cut with the grain.
From that definition, which is the one I learned years ago, The rip fence doesn't come into play anyway. Just nitpicking. :lol: