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Chrysal in handle fade
WindhoverMark:
Been lurking for a while now and this is going to be my first post. Thanks for all the help you have already provided. This forum is an incredible resource for a beginning bowyer.
I've been working on this hackberry stave for a couple weeks now. 66 inches, static handle, has a fair amount of character including a bit of natural deflex on both limbs. I've gotten it pretty much to final tiller; ~45lbs at 28". I was shooting it over the weekend and noticed that a chrysal has formed in the upper fade.
I understand that localized chrysals are a sign that there is too much strain/bend in one area, but the fades aren't really bending. Anywhere else on the limb I would scrap wood from either side of the chrysal to try and distribute the strain more evenly across a larger protion of limb. but in this case I can really only remove wood north of the chrysal. As I type this I realize that I could remove wood below the fade if I am willing to convert the bow to a bendy handle, which is an acceptable answer.
So here are my questions... Can I fix this chrysal, or do I just give up and move on to my next stave? If so, how? And once fixed, how do I prevent it from coming back?
Pappy:
I would really like to see a picture of it strung up and full draw, kind of odd place for a Christal. Also did you try and add reflex or take out deflex at the handle, looks like it had a lot of heat there. :)
Pappy
bradsmith2010:
the grain shows that part is thin
Dances with squirrels:
That doesn't look like a compression chrysal/fret. It looks more like a tension failure. Did you try to heat it and reflex it there?
superdav95:
I think Brad may be onto something there. The shape of your grain looks thinned out in the area of the “stress fracture”. I agree with dances with squirrels too that it looks more like a tension failure. This could be a result of pulling beyond intended weight early on in tiller or over drawing bow at poundage. A few solutions could perhaps be to even it out a bit as the belly seems a bit week you could trap the back of this bow a bit to even up the tension with the belly. You may loose a little poundage though. Other thing is you could fill this area with super thin ca glue and even up that belly where it thins out and Match other side and see where you are on the tiller. It’s hard to know until we see the bow on the tiller tree being bent. If you have too much inner bend happening it may have hinged a bit early on too there on that week spot. So many possibilities. We need to see the bow on a tiller tree bending. Keep us posted.
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