I think the easest way to accomplish that would be to glue the three tyeps of wood together. Then cut the dovetails out of that pice of wood. But then again i can't exactly picture in my head what you are talking about :| Sorry
It only can be "made" with Leigh tooling? That sounds like to me that I would normally just make the dovetail with two kinds of wood then cut one 1/8th away from ends and then recut it with a smaller one and mate it with the other side...I think I got the picture...template tom said:As suggested two cutters are required first cut with the larger cutter then fill in the shape with the contrasting colour then when the glue has dried route with the smallet cutter to complete the joint. Looks good but an extra cut is required. Leigh Dove tail Jig
Tom