Primitive Archer
Main Discussion Area => Bows => Topic started by: paulc on August 21, 2019, 12:16:43 pm
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I had a real hard time getting a pic of this but maybe that is the beginning of limb failure? this is an osage bow I bought 16yrs or so ago....
Thoughts, I apologize for the crappy pic. Paul
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another try at a pic
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Looks like it is chrystaling. I think that's the spelling. Hey if it's made it 16 years...not bad! :)
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Merriam Webster Definition of chrysal
: a transverse line of crushed fibers in the belly of an archery bow beginning as a pinch
— called also fret
And that's a little one :D
A chrysalis is what a butterfly develops in.
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that doesn't look too bad... they normally run at 45 degrees right across the belly and you can feel 'em with your finger nail.
I hate them with a passion.
Del
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yeah that doesnt look too bad. Is that near the fades?
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Have you ever had a dry fire of any sort?
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I doubt it's a chrysal. Dont sand it but burnish it down flush with the surrounding area, go shoot it some, and see if it pops up again.
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I doubt it's a chrysal. Dont sand it but burnish it down flush with the surrounding area, go shoot it some, and see if it pops up again.
I'm just looking on my phone but what I think I'm seeing doesn't look like a crystal to me either. I might be looking at the wrong thing though
Bjrogg
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I doubt it's a chrysal. Dont sand it but burnish it down flush with the surrounding area, go shoot it some, and see if it pops up again.
I'm just looking on my phone but what I think I'm seeing doesn't look like a crystal to me either. I might be looking at the wrong thing though
Bjrogg
Given the question Pearl is asking above, I dont think he believes it's a chrysal either.
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I have never once had Osage chrysal. So far as I know. Every other malady under the sun, but never a chrysal. I’m with the others in thinking something else has taken place.
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can certain finishes do that maybe like a small crack in the finish? But tbh it looks like a chrysal to me but I am not as knowledgeable as these folks here.
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I see a chrysal. But I only see one. It is going across the grain. They happen because that area is bending too much in relation to the rest of the limb. The fix it to retiller leaving that area alone. Tiller the other limb to match.
No, they are not in the finish. That's just wishful thinking. :)
Jawge
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I have one of those on the belly of my record flight bow. I did not see it in the heat bending on the reflex but it could have happed then . I don’t shoot the bow a lot but no ill affects have happed yet. It still breaks records. Or at least I think it’s going too. Arvin
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To me, it looks like one of the little cracks that can pop up when you bend in some reflex with a heatgun. It happens in tension rather than compression because the wood is being bent backwards. They look similar to frets but they are horizontal like that instead of diagonal like frets tend to be. Is that a possibility? I worry about those less because they weren't created by too much compression, and they are usually in places that aren't under a lot of stress (the outer thirds).
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To me, it looks like one of the little cracks that can pop up when you bend in some reflex with a heatgun. It happens in tension rather than compression because the wood is being bent backwards. They look similar to frets but they are horizontal like that instead of diagonal like frets tend to be. Is that a possibility? I worry about those less because they weren't created by too much compression, and they are usually in places that aren't under a lot of stress (the outer thirds).
That's what I see to Weylin but I might not be seeing the frets.
Bjrogg
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Ill try to get a better pic or two...
Dry fire as in release w no arrow? I’m sure I’ve had a botched release or two where the arrow for one reason or another didn’t stay on the string and didn’t leave the bow....damp fire? Never on purpose released the string was no arrow on it.
Is it a problem? Just something to keep an eye on?
Thanks so much everyone!
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Sure looks like a chrysal to me, even though a very minor one. If that is actually on the belly, I just don't like the way the belly is rounded so much. I would flatten the belly of the whole bow and thereby scraping off the chrysal and see how much draw weight would be lost. If not too much, you would be better off that way.
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I’m with Weylin on this. Did you induce reflex in that area or not? On mine I finally seen it in tiller and left that area a bit bigger. Arvin
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He said it is 16 years old. I doubt he was heat treating it into reflex! It does look like it could be a tension failure induced that way though.
If you show us it at full draw with a mark on the spot where the chrysal is it should be obvious. You can also string it and see if it fells raised. Or rub it with cotton wool.
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The heat treating revival began in the summer of 2002.
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Show us the strung bow profile, it the tillering is a little off this could be the cause.
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They don't get any better and they only stay the same if you don't shoot the bow.
The eventual ( hard to predict the time line) result is that the bow will fold up like a book.
I have had that happen on a bow I made for my younger brother of blessed memory.
I saw it happen.
I already mentioned how to handle them.
Jawge
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I did not start building bows until 2004 . But I was putting heat on them then . All wrong for the most part. But I did not have you guys to tell me I was wrong because that was my pre primitive archer days and my computer days. Arvin
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Here are some more pics...area of concern is about 6 or maybe 7 inches from tip. The tip with the string loop, not the end with string tied to bow tip.
thanks so much for your input.
Paul
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Not likely that they are chrysals as the limb doesn't seem to bend in the outer limbs anyway
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+1
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Not a compression issue at all.
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Not a chrysal, more likely a tension crack from a tip correction. Or it suffered car door impact... Either way, ignore it and enjoy the bow.
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They either came from the semi dry fire you spoke of, or, when the limbs were heat straightened at build. Odds are the wood just had to become much darker for you to see them. I wouldn't even think about them and continue shooting your bow. My favorite bow has them on one end and has been shot a zillion times.
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Considering the location, as mentioned by others, tension fracture is much more likely. Someone must have bent the tips backward, probably to make the side profile look better. I have done that a couple of times without thinking, with or without dry heat, not sure. If you are worried, you can put tip underlays on both tips. You can even recurve them a little in the process.
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Y'all the best.
Paul
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That far out on the tip you might even be able to sand out whatever they are but it would mess up the nice patina you've got going there :D I'd just shoot it. I think if there was going to be any chrysals on that limb they would be on the inner third.
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I had the same on the back of a well in shot osage bow, I ground off the back and bamboo backed the bow to be on the safe side.
They weren't cracks in the finish as has been suggested, I found they were still there as I ground off the back, I got past them before I bamboo backed the bow.