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Sinew cross section question

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possum:
I have a short sinew backed osage bow in the works.  I had it floor tillered somewhat then sinewed the back.  Of course I'm guessing it is about 200@3" right now. :o  :D  I do have to wonder at this point about the belly shape. ???  Does a short sinew-back bow prefer a rounded or flat belly?  My own instinct would be a flat belly but I would defer to some of the ideas coming from more experienced bowyers.  Jump in with ideas soon.  My tillering fingers' itchin'. ;D

possum

Pat B:
In my experience, an osage bow, whether it have a sinew backing or not, prefers a slightly rounded belly.   Pat

tom sawyer:
I generally try and make the profile of the belly somewhat similar to the back, maybe just slightly less round than the back.  I think this keeps the bow limb edges from trying to curl up or down.  But it really doesn't matter too much, because with sinew you can really bend an osage bow a long way before it will fail.

mullet:
If it's short I would go with a more flat belly.I believe with it being short and the sinew would have a tendency to start chrysaling if it was rounded.

a finnish native:
FLAT! a sinew backed bow is drawn further than a self one and thus the belly has to handle more compression. and not only the woods own compression but also the compression of the sinew and dry glue.

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