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Author Topic: Bamboo backed osage r/d another question  (Read 1824 times)

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Offline Lee Lobbestael

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Bamboo backed osage r/d another question
« on: January 15, 2017, 03:28:50 pm »
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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Offline Lee Lobbestael

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Re: Bamboo backed osage r/d another question
« Reply #1 on: January 15, 2017, 04:00:13 pm »
Bamboo not book :D auto correct
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Offline bubby

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Re: Bamboo backed osage r/d another question
« Reply #2 on: January 15, 2017, 05:11:54 pm »
I think you are probably ok once glued up it will be much stiffer
« Last Edit: January 15, 2017, 06:02:32 pm by bubby »
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failure is an option, everyone fails, it's how you handle it that matters.
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Offline DC

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Re: Bamboo backed osage r/d another question
« Reply #3 on: January 15, 2017, 05:19:19 pm »
Amazingly stiffer, at least boo yew was.
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Offline Lee Lobbestael

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Re: Bamboo backed osage r/d another question
« Reply #4 on: January 15, 2017, 05:51:49 pm »
Ok good I'll glue er up tomorrow
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Offline Trapper Rob

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Re: Bamboo backed osage r/d another question
« Reply #5 on: January 15, 2017, 09:41:20 pm »
The ones we glued up got a lot stiffer.
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Offline Dances with squirrels

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Re: Bamboo backed osage r/d another question
« Reply #6 on: January 16, 2017, 06:36:49 am »
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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Straight wood may make a better bow, but crooked wood makes a better bowyer

Offline Lee Lobbestael

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Re: Bamboo backed osage r/d another question
« Reply #7 on: January 16, 2017, 06:43:19 am »
Ok great I was a little worried that I had wrecked it right of the bat
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Offline Springbuck

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Re: Bamboo backed osage r/d another question
« Reply #8 on: January 20, 2017, 12:57:53 pm »
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.
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