Malcolm, thanks for your approval, it means a lot to me comming from the "Master".
The diamonds were done using a 60 degree router bit both to make the voids in the segments and to cut the matchng diamonds. The diamonds are 2 piece to enable sanding of the segments after the half diamond was glue into the maple segment. I tried to make the diamonds in one piece but found I couldn't get the machined exact enough to fit properly. I have done one piece shapes before but they were made to fit a 90 degree void, a square is much easier to machine to fit than a 60 degree diamond.
Always drink upstream of the herd.