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Z splice

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Mad Max:
Put some very thin super glue in those cracks, last picture
You can wrap it later with string serving and soak the serving down with super glue.

Eric Krewson:
The cracks are what we call "wind shakes", they are very common in osage. They can be deep or shallow, I always lay my bow out so I avoid these cracks because you never know about the depth.

If they are still there when you completely shape your bow, fill them with superglue and proceed like they aren't there. If any run off close to the side of your limbs, a serving thread wrap soaked with superglue would be in order.

The cracks are usually visible at the butt end of a log when you cut it, they radiate out from the core.

 

Muskyman:
Thanks guys.  I’ve got a ways to go before I have to deal with them. I’m probably around 5/8 to 3/4 thick right now. Don’t recall if any of them run off the edge but, I’ll keep an eye on them.

Muskyman:
Have done a little more work on the bow. Got it shaped and added some to the handle section. Still stiff so I’m going to thin the limbs more before I do any straightening on the limbs. Looks like I’m going to have some run off with the wind shakes so I’ll probably have to wrap the area with something. I’m thinking maybe sinew, I’ve got some backstrap sinew.

Eric Krewson:
Sinew is good, I use serving thread but have used sinew for the same type of wrap. The thread is neater so I have used it in the field at tournaments when someone was shooting one of bows I made and heard that ominous "tink", caught in time I have never had a bow fail with a thread wrap. I tried to wrap a few bows that had a severe break starting and couldn't save them.

Thread wrap and a sinew wrap, I wrap an inch above and an inch below the crack.

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