Yep go to the threads below Bowed or Beadman has made 6 ot 7 I lost count...lol out of hickory I prefer maple in all lam bows with three or more lams , he also has some great hands on formulas for sinew & horn draw weight all bows draw weight are a sum of the thickness , width ,taper, length and reflex of the limbs for given materials you could probably figure out your native bow with his formulas but like said Adams book is really a great place to start, I use it for other style bows too , with any bow of different materials the first is always guess work just part of the game !