Osage growth rings, how close is to close?

[ccase39]

At what point would you feel the need to back an Osage bow from a stave with thin heartwood?

[sleek]

After it lifts a splinter. Beyond that, with high rig count osage, where you need a magnifying glass to see the rings, I have learned that a solid ring isn't needed, close enough works. Just make certain you dont feel any gouge9  or sharp dips, all violations need to be feathered out for as long a distance as you can. If its flat stave with no knots, you can just flatten the back with a belt sander and get to work.

[bradsmith2010]

I am not so brave,. ,..I try my best to work one ring,,.thin ring makes good bow,,,raw hide backing sure won't hurt

[sleek]

I am not so brave,. ,..I try my best to work one ring,,.thin ring makes good bow,,,raw hide backing sure won't hurt

Rawhide isn't a bad idea if you are uncertain.  I'd be willing to bet if it doesnt break or life a splinter after a 1000 shots, you could remove the rawhide and go on about your day.

[SLIMBOB]

Love thin ringed Osage. I want a good solid ring on the back, but if I have one...thinner’s a winner.

[bownarra]

Just be careful and chase a ring....

[Pat B]

I really like the performance of thin ringed osage. If it worries you adding a rawhide backing could give you some protection like Brad suggested.