BowSlayer, google or search for Skane crossbow. It is an all wooden bow with a push pin lock from Medieval Denmark (now Sweden). It is discussed in Josef Alm's "Survey of European Crossbows, a rare book that is long out of print. But you should come up Alm's drawings, and other data on various version of this bow. You at least don't need any metal working skills to make this kind of crossbow.
