Hello Everybody , Looking for some specks on building a good longbow for myself , because they are so darned expensive , I would like to make one 68" long hickory backed, osage belly 29" draw at around 60lbs. Glass laminates , can ayone give me some taper measurements for this end result . non bending riser with enough meat on it for center shot and radiused shelf. locater grip type ,trial and error I can not afford at the moment . If any one has the right formula to share I would be very thankful. Let me know soon. Will need glass and wood Lam thickness and taper demensions.