I’ve admired this type of puzzle made by other lumberjocks – so I made one myself from walnut, curly maple & sycamore. The pins are red oak. Finished with BLO & paste wax. I used the technique that another lumberjock (Paul Pomerleau) used with his puzzle (http://lumberjocks.com/projects/56463) to drill the pin holes accurately — which is why my version has the sycamore caps.
Crafty Puzzles