A kerf making machine includes a table. A slide assembly comprises first, second, and third slides. The first slide has a first stop and a first abutment on the end thereof. The second slide has a second stop oppositely positioned to the first stop. The third slide has a third abutment on the end thereof and is positioned relative to the first abutment a distance that is the exact distance of the desired distance. The slide assembly is reversed from its one side to its other side wherein the first slide, the second slide, and the third slide are positioned on the table.