In Part #1, I mentioned that the pattern of the Celtic knot can be varied by how much wood is removed during the creation of the slots. Typically, I plow out a 3/8" wide slot and fill it with three inserts. That technique results in a pattern of knots that overlap-

If the slot is cut, leaving a center slice of wood intact, and then placing an insert on each side; the pattern displays diamonds at the cross-over-

Another subtle change in the pattern can be achieved by the sequence of the cuts related to the sides. I number each side of the blank during the layout procedure. Then when cutting the slots, I cut sides with the sequence 1, 3, 2, 4. Cutting the sides in a 1, 2, 3, 4 makes a slightly different pattern. 

So, that's how it's done! Once sanded, and the ends trimmed, a liberal application of mineral oil and they are ready to use.