I beam riser ?

[Forwardhandle]

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 ?

[Buemaker]

Here is a recurve handle blank with Sonokeling Rosewood with an Ibeam of Bubinga and contrasting Birch veneers.
 

[Buemaker]

Finished RD bow with Ibeam. I offset the Ibeam to get its full strength in the cut out sight window
   

[Forwardhandle]

Verry nice thanks for posting that  I appreciate it  beautifull !

No 90 degree grains...  Keep them all length wise...

[Mike Mecredy]

Really nice.

[Roy from Pa]

Bue that is awesome.

[kennym]

Nice! love the accents in there!!

[Forwardhandle]

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 ?

[Buemaker]

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.

[Forwardhandle]

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 !

[Bvas]

As simple as this topic may seem.....it can get confusing quickly to some(myself included     ).

Please     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

[Crooked Stic]

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

[Bvas]

Stic, are you speaking when looking at side of bow or back to belly.

I should clarify, I was referencing side view.

[Roy from Pa]

Heck it's only a gwass bow....  

[TradBowyer]

don't forget when gluing individual strips of wood together they become homogenous so grain orientation becomes less critical. making an I beam riser is the same concept as actionwood. individual pieces glued together as one is stronger than a single block

[kennym]

Originally posted by TradBowyer:
don't forget when gluing individual strips of wood together they become homogenous so grain orientation becomes less critical. making an I beam riser is the same concept as actionwood. individual pieces glued together as one is stronger than a single block

Yes, you could cut the block in 3 pcs and reverse the center one and increase strength a lot!

[Forwardhandle]

Sounds good Kenny I will do it with both peaces , glad I started the thread I have a much better understanding of the concept now ,thanks fellas, I was thinking it had to do with grain orientation prior to the thread !

[kennym]

If you can, make the grain like Bue's outer pcs. Won't hurt if you have a choice, plus shows grain better on sides of riser.

[Buemaker]

It’s only rock’n roll and I like it like it, yes I do.