Primitive Archer
Main Discussion Area => Bows => Topic started by: huntersim on February 21, 2009, 05:40:08 pm
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Hi everyone.
I have some crummy yew that I thought would work as a core pretty well. Guess i was wrong..... :-\ This is the second try that shows the yew coming apart, same configuration. Anyone have any ideas on an alternative? I was thinking maybe cherry. Anyone know how it would hold up to a lot of shear?
Matt
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Matt that looks like hickory, yew, osage? Should be a good combo. From what I read the old Bear Deer slayers where made of that configuration and almost the same design as you have there with the static curves. Is that what you were shooting for? Not sure what happened....
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exactly what i was shooting for Ryan.
No doubt its a good combo, just not with the yew I have. Its just some really wide ringed light weight yew that really isnt very good for much but lighter weight bows. All it did was pull the yew apart. I have some cherry that I'm thinking of trying, just to see how it holds up to the same thing...unless someone has had similar results with it. ??? At the very least, it will darken in a similar way.
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It kinda looks like a tension failure to me.
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What type of glue are you using? Could be de-laminating at the glue line.
Save the Yew and sinew back it. I've found the wide ringed yew works great when sinew backed as a short wide NW style bow.
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here's a few more photos for you guys to examine. I wont rule out anything but like I said...i had another give me some indication it was going to do the same thing before I set it to the side.
Anyway, I'm just curious about cherry or a good alternate thats easy to come by. I'm not going to try again with the yew I have. Thanks.
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Are you sure that is yew??? Doesn't look like it to me by color???? If you are sure it is, what means did you use to bend it??? Dry heat, or steam? If you got it as lumber, and applied dry heat thhis may be your problem. Yew does not like to be bone dry.... Also would like a front view of your hickory backing...
Brian
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I'd say your hickory is bad. Were both failures with the same hickory?
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I've had good luck with black walnut as a core wood. And also bamboo flooring.
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Brian - yes Im sure its yew....the color in the photo is off. You may have hit on something though.....dry yew. Only the tips see any heat. But the slats were stored in my hot box while I was preping things.
Thanks Pat. To answer your question....no.
Gordon - Thank you. I've never built one with a core of black walnut. Its a little darker than I wanted but I may try it out.
Well, you all have a good weekend.
Matt
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Don't give up on the yew! It will work! If it was kiln dried let it sit out in your garage for a while to regain some moisture, then steam bend, or boil the bends, no dry heat. I think with proper MC, and good backing you will have success. Rings in yew have no effect as a belly wood except limb width. One VERY important thing to look for is wind shake sometimes very difficult to see......cracks vertically in the wood.
Brian
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Thanks Brian.....sent you a PM.
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Matt, the Cherry will work fine for a core wood. My brother uses it all the time for his tri-lam bamboo backed and bellied bows. In fact cherry is one of his favorite core woods because its light and springy.
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There are many grades of yew, I have seen some pretty soft yew, and yes it did have wide growth rings, some of the trees round here send up straight shoots that grow much faster , heading for the light, they are straight and tempting to cut for bows, but the wood isn,t much good, like a different wood compared to the main trunk. you need better quality yew it really varies (like all woods)
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Black walnut is a good one I know because ihave on built by John Mcullough. Great bow! I would also try sassafras. Strong , light weight, and good tensile strength. Consider it Matt.
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Dragonman,
I have yet to see yew I can't put a fingernail into.....when you find some you can't, send it my way......As far as shoots they can make fine bows. If you cut a tree trunk it may have wide rings, but the very opposite may be true of limbs. Tree limbs will generally in my expirience have a lot tighter rings (infact) to someone that did not know yew that well, it will fool them as being "good" yew.
Native americans quite regularly used limb splits off of trees, they also used splits from the trunk.....but they did not kill the tree.
Brian
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Ryan - thats good to hear. I have some on hand but Ive never used it for a bow....think I'll give it a try. It certainly seems springy and the color is close.
Bullitt - Sassafras....never considered it. Thanks for the idea. I may even be able to get my hands on some locally. Is the John McCullough bow all wood? I know he builds some beauties. I'm definitely going to try one with walnut.
Dragonman and Brian - thanks. I certainly dont want to give up on the yew, its obviously proven. I've even had a few turn out with that configuration.
Thanks everyone for the ideas.
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Matt, yes it is a bamboo backed,walnut cored, and some 40 something old osage i had given him to build this bow. And yes, John is quite the craftsman! He had told me that a walnut board and and a hickory backing can't hardly go wrong for most in performance and simplicity as an all wood bow.