I found these after taking the blank off my jig. I'm sure they are drying checks and they showed themselves after reflexing the bow in the jig during glue up. I have filled them with super glue and clamped them. I'm sure hoping to save this one as it turned out real nice, except for the checks of course. Any tips would be appreciated. I hope to not have to do a sinew wrap as it will take from the looks of the bow. I am considering putting the nocks in and on the end with the checks, doing a sinew wrap down inside of the nocks themselves. A later nock overlay would hide most of it. I'm hoping that since the wood affected will be under compression and not tension it will work. I'm depending on you folks to bail me out here, thanks . Tim

I wouldn't worry about them, the bamboo is doing almost all of the tension work and will hold down any splinters.  Just keep an eye on them as you tiller.

I am considering working the tips to near dimension and wrapping the one with sinew just to see how it goes while tillering. If I can come up with a neat wrap of some type that would go with the bow I would but right now about anything seems kinda ugly.

ttt

Side checking wood is a pain because in my experience it will continue to side check no matter what you do.

I put some serious work in a sinew backed osage bow that showed a side check in the handle area when I roughed out the bow. When the sinew dried it pulled the wood apart.



Having poor luck with side checked wood in the past I should have picked a better piece of wood.

I ran into some side checking on BBO's when getting slats pre cut from high humidity regions of the country, now I seal the sides as soon as they arrive.  When they do check, I have been able to fill the cracks with Zap-A-Gap (thick super glue) and ignore them from that point on.  Like John said the bamboo will take most of the tension.