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Fixing an overdrawn boo backed hickory R/D
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Topic: Fixing an overdrawn boo backed hickory R/D (Read 962 times)
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Flyonline
Member
Posts: 33
Fixing an overdrawn boo backed hickory R/D
«
on:
November 04, 2020, 03:42:29 am »
This bow was gifted to me after the owner overdrew it somewhat past the recommended d/l. It's taken a bit of set in the bottom limb in the form of a slight hinge around some chrysalling just where the deflex flattens out (about 2.5-3" worth). The ring lines have also lifted a little where it's been over stressed into small ridges running along the limb following the grain.
64" NTN
55# @ 28"
Boo backed hickory with purple heart (I'm assuming) powerlam and tip wedge
1 3/8" at the fades straight taper to 3/8" at the nock
My plan was to scrape off finish and down through chyrsals then over patch with another lam of hickory then re-tiller bottom limb only back to good. I don't care what it ends up at, I'd rather have a shooter at 40# than a hanger at 55. So far I've successfully patched another chrysal that formed around a small knot on the edge of the limb, but that was only a scallop rather than a full overlay.
Does this sound reasonable? I'm assuming the original owner shot split vs my 3 under from the nock height on this and another bow I bought off him. I've included a photo drawn to about 25-30#
Thanks
Steve
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Del the cat
Member
Posts: 8,322
Re: Fixing an overdrawn boo backed hickory R/D
«
Reply #1 on:
November 04, 2020, 07:33:56 am »
Be warned, chrysals go a lot deeper than one might think 1/8" - 3/16"
As long as you get down to sound wood, it should be repairable.
Del
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Health warning, these posts may contain traces of nut.
Eric Krewson
Member
Posts: 5,417
Re: Fixing an overdrawn boo backed hickory R/D
«
Reply #2 on:
November 04, 2020, 08:49:17 am »
First cut down at the chyrsal to see how deep it goes, this will give you an idea of how thick to make your lam.
Your solution is very doable and right up my ally, I have saved a bunch of bows doing fixes that others wouldn't attempt just to see if I could.
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Marc St Louis
Administrator
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Posts: 7,877
Keep it flexible
Re: Fixing an overdrawn boo backed hickory R/D
«
Reply #3 on:
November 04, 2020, 07:53:01 pm »
Are you sure it was overdrawn? Looks more like the kind of damage you would see from the wrong type of bracer being used
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Home of heat-treating, Corbeil, On. Canada
Marc@Ironwoodbowyer.com
Flyonline
Member
Posts: 33
Re: Fixing an overdrawn boo backed hickory R/D
«
Reply #4 on:
November 05, 2020, 01:55:54 am »
Del
yes, I found that out with my scallop fix - it just kept going! These seem very fine, if I didn't know better I'd call them hazing cracks in the finish.
Eric
I only have one hickory lam at the moment, and I'll probably have to thin it down to be useful. It's a junk lam anyway, so it will be a perfect use for it
Marc
I'm only repeating what I was told, I've only strung it the once and haven't shot it at all. The other limb does have some roughness about it like the lifting ridges on the bottom limb, but it might just be lack of finish sanding by the bowyer.
Steve
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Del the cat
Member
Posts: 8,322
Re: Fixing an overdrawn boo backed hickory R/D
«
Reply #5 on:
November 05, 2020, 04:48:18 am »
Ah, yes, when we first meet chrysals, we think maybe it's a tool mark, or a crack in the finish, maybe it will sand out... and we try and it reappears... they are evil insidious things that I hate with a passion.
Del
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Fixing an overdrawn boo backed hickory R/D