Primitive Archer
Main Discussion Area => Bows => Topic started by: Lee Lobbestael on January 15, 2017, 03:28:50 pm
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So I'm building a book osage r/d bow and yesterday I flattened the bamboo on a jointer and cut a taper into my osage. I made the bamboo 1/8" thick in the middle and on the edges it's like a knife edge. The osage after I cut it on the band saw and flattened the back ended up just under a half inch thick at the fades and about 3/8" at the tips. I held the two together and flexed them and it seems a little bit to whippy to make a 50 pundits bow. Will they be stiffer once they are glued up or should I add a lam?
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Bamboo not book :D auto correct
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I think you are probably ok once glued up it will be much stiffer
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Amazingly stiffer, at least boo yew was.
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Ok good I'll glue er up tomorrow
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The ones we glued up got a lot stiffer.
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1/2" of osage is enough to make a 70# @ 28" BBO bow in a d/r profile. It will get a LOT stiffer once it's glued together.
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Ok great I was a little worried that I had wrecked it right of the bat
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Naw, bro! Glued together they will be twice as stiff as either is now, and if you are gluing up a Perry R/D, it will be even stiffer still.
Anymore, depending on wood, I add a powerlam at the handle, and maybe 1/16" reverse tip wedges and start with a 3/8" belly core, just to save wood. With bulletwood, ipe, BL, and goncalo alves, that's plenty and if I have to play with the width I do.