The new image on the home page shows variations of a method for joining strips of semi-rigid materials as an alternative to skiving or lapping. Go to: http://www.deeshaa.net/node/314
for a suggested method for cutting duplex finger joints to expedite the production of bamboo mat board in India.
From the top down: there are a conventional single layer "Finger Joint" to provide a small degree of beam strength and a few narrow surfaces for the application of glue; a "Duplex Finger Joint" to provide more beam strength and surface area for glue; a "Jigsaw Finger Joint" to provide narrow surfaces for glue; and a "Duplex Jigsaw Finger Joint" that could provide an "instant" connection and beam strength and more surface area for glue. All of these strip joining methods could be used as "multiples" for the edges of panels with one or more layers of material, or materials.
The subject line is offered as a potential pick-up line for a mechanical woman— if you ever meet one.
Best wishes, old Frank