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Author Topic: I beam riser ?
Yellowwood
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Hi Fellas Im putting my riser material together for a Kennym bow , Kennym mentioned that I beaming with just wood increases the strength of the riser ,Im assuming that means putting one peace vertical grained & one peace horazontal grain ? Or a combanation of alternating grains ? I just want to make sure Im thinking right ?
Posts: 206 | From: Illinois | Registered: Nov 2017  |  IP: Logged | Report this post to a Moderator
Buemaker
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Here is a recurve handle blank with Sonokeling Rosewood with an Ibeam of Bubinga and contrasting Birch veneers.
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Posts: 2071 | From: Norway | Registered: Feb 2004  |  IP: Logged | Report this post to a Moderator
Buemaker
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Finished RD bow with Ibeam. I offset the Ibeam to get its full strength in the cut out sight window
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Posts: 2071 | From: Norway | Registered: Feb 2004  |  IP: Logged | Report this post to a Moderator
Yellowwood
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Verry nice thanks for posting that I appreciate it beautifull !
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Shredd
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No 90 degree grains... Keep them all length wise...
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Mike Mecredy
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Really nice.

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-Maddog
TGMM Family of the bow

Maddog Archery
USAF, Retired
A.C.B.C.S.

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Roy from Pa
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Bue that is awesome.
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kennym
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Nice! love the accents in there!!

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Stay sharp, Kenny.

https://www.kennysarchery.com/

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Yellowwood
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Ok at the risk of sounding dense ,but in then pic above it looks like the outer 2 peaces of wood are flat grained and the center peace is edge grained ? That would put them 90 deg,s grain wise to each other , or em I seeing it wrong ?
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Buemaker
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You are seeing correct. When glued up like that with strong woods like Rosewood and Bubinga I do not think it matters.
The finished bow have an Ibeam of Lignostone and all pieces are flat grain.

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Yellowwood
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Ok thanks got it ! Im going to use Mozanbique & rock maple , I recently used Mozanbique on a all wood bow riser that wood is about as dense of wood as I have ever worked Thanks !
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Bvas
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As simple as this topic may seem.....it can get confusing quickly to some(myself included [Wink] ).

Please [pray] someone correct me if I'm wrong.

There are four possible grain orientations from best to worst:
-Vertical Flat
-Vertical Edge
-Horizontal Flat
-Horizontal Edge

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Some hunt to survive; some survive to hunt

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Crooked Stic
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I would think all edge grain in main part and ibeam will be stronger. no more than quarter sawn is best.

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High on Archery.

Posts: 3241 | From: Princeton IN. | Registered: Dec 2003  |  IP: Logged | Report this post to a Moderator
Bvas
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Stic, are you speaking when looking at side of bow or back to belly.

I should clarify, I was referencing side view.

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Some hunt to survive; some survive to hunt

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Roy from Pa
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Heck it's only a gwass bow.... [Smile]
Posts: 11810 | From: PA | Registered: Oct 2006  |  IP: Logged | Report this post to a Moderator
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