Primitive Archer
Main Discussion Area => Bows => Topic started by: DC on November 20, 2018, 09:59:07 am
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I unbraced my bow last night and the string got hung up in the nock a bit. I looked closer and noticed that both sides were split and lifting. Before I thought to take pictures I glued them down with CA and filed the corners rounder thinking that is what caused it. Now I'm wondering. I tried to draw in what it used to look like. Do you think I've solved the problem? I may have to put an overlay on it to hide the splits >:( :-[
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Mmmh, hard to say from the pics.
Is that a boo backed osage?
Have you upholstered the ears (in case you use FF)
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Bind round just below the shoulders with sinew or linen thread which is then touched with low viscosity CA which will soak in producing a V strong fix.
Del
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Simon--It's boo backed yew. Upholstered the ears? I think I understand what you mean, like padding the shoulders but do you have a link to something that shows how it's done.
Del-- If I bind it, it will bridge over the string groove. Is that not an issue?
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The sharp edges definitely have the string some splitting purchase. I would overlay them. Binding will interfere with your groove.
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Simon--It's boo backed yew. Upholstered the ears? I think I understand what you mean, like padding the shoulders but do you have a link to something that shows how it's done.
Del-- If I bind it, it will bridge over the string groove. Is that not an issue?
Sorry, I meant the string ears.
Good advice from Del and Pat above!
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Serving the loops??
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I do not like serving the loops, to much work for me. I just padd 2x2 pieces of Dacron at the ears.
Look here: http://primitive-bows.com/about-strings/
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I would overlay it regardless if you had those splits. Bamboo will split easily when force is applied in the direction of the fibers.
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I do not like serving the loops, to much work for me. I just padd 2x2 pieces of Dacron at the ears.
Look here: http://primitive-bows.com/about-strings/
I have just started doing that. I don't have any B-50 so I used extra FF. This string is 8 strands with no padding.
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I would overlay it regardless if you had those splits. Bamboo will split easily when force is applied in the direction of the fibers.
I'm thinkin' that's a plan. :D I just couldn't see this problem coming. I thought al the forces were in the right direction. I think I'll use some thin horn.
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I'd superglue the cracks and add tip overlays
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All fixed except for a buff up :) Thanks guys
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Bear in mind, horn has grain too.... just sayin'
Del
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Sure, but it's made to take impact. Whether on the head or the hoof.
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I would have put the overlay on differently by cutting at an angle almost to the belly and coming down the limb at least 2". This way you are assured to get rid of any stressed or cracked wood and have a very strong limb tip. The picture is of a BBO tip overlay.
The smallest number of strands of FF I use on a bow is 12, I used to pad the loops but no longer do, no problems so far.
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I had that happen once, from then on I have always used horn or wood overlays on my bow tips.
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+1.
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I would have put the overlay on differently by cutting at an angle almost to the belly and coming down the limb at least 2". This way you are assured to get rid of any stressed or cracked wood and have a very strong limb tip. The picture is of a BBO tip overlay.
The smallest number of strands of FF I use on a bow is 12, I used to pad the loops but no longer do, no problems so far.
I considered bigger overlays but I had no reason to suspect anything but the boo was splintered and the curve of the hooks is so tight that by the time I got it flat I would have done more damage. I thought this would be the simplest route.
PS- I just went back and re-read this thread and nowhere did I mention that it was just the Bamboo backing that was splintered. That may have caused some confusion. Sorry.
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I bend the overlay on the same form I bent the bow on.
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Good thinkin'. I just have a bunch of 2" pieces of various woods that I've picked up. Too short to bend. Maybe I'll collect longer pieces :)
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DC, I had trouble with this one splitting on me when I had temporary string groves. Like you said with yours to square of edge where grove meet back. I put on this Antler overlay. I got my string lined up exactly where I wanted it and narrowed up tip and overlay. I know it looks a bit crooked but so is the tip and it puts the string right where I want it. If you look closely you can see where tip split before I narrowed it. Been shooting this one for awhile now and it's working fine.
Bjrogg