Primitive Archer

Main Discussion Area => Bows => Topic started by: cool_98_555 on November 20, 2016, 11:46:19 pm

Title: Hairline crack on side a problem?
Post by: cool_98_555 on November 20, 2016, 11:46:19 pm
Hello everyone,

I've got a great bow in the works here.  Osage snakey bow, 68" and 1 1/8" wide.  Currently it is 7/8" thick on the limbs and it is just ready for tillering (lined the tips up today).  Problem is, I found this hairline crack on one side of one limb and i'm not sure if it will pose a problem when I start tillering.  I have filled it with superglue, but i've never had a crack in this kind of spot before.  Crack runs about 6 inches down the limb.  Check the pictures and please let me know what you think.

Thank you!

http://s1378.photobucket.com/user/cool98555/media/IMG_1029_zpsyiybtfvo.jpg.html
http://s1378.photobucket.com/user/cool98555/media/IMG_1028_zpsgxczna9i.jpg.html
Title: Re: Hairline crack on side a problem?
Post by: BowEd on November 21, 2016, 12:09:10 am
I'm sorry to say this but that crack is a game changer.It'll most surely break there.It runs to the edge.It's not running in the growth ring so it is'nt a luminar seperation in the growth ring.You can try it on the tillering tree but the outlook is'nt very good.Sorry.
Title: Re: Hairline crack on side a problem?
Post by: cool_98_555 on November 21, 2016, 12:16:31 am
Oh no.....:(   What a shame to hear something like that....put so many hours into shaping this bow already and the snakey profile on this one is just beautiful....
Title: Re: Hairline crack on side a problem?
Post by: stuckinthemud on November 21, 2016, 06:16:04 am
If its a total loss anyway, you could chase-out the crack and see how much width is left - may be enough for a different design of bow - may be a snakey short-bow in there? How far along the limb is it - near enough the centre to cut it out and splice it back together to get a short bow, or splice in a handle to put some length back in?
Title: Re: Hairline crack on side a problem?
Post by: Dances with squirrels on November 21, 2016, 07:07:57 am
If nothing else, you could cut that limb off and save the other to splice a new piece on at the handle.
Title: Re: Hairline crack on side a problem?
Post by: Marc St Louis on November 21, 2016, 09:16:04 am
I'm seeing 2 things there.  One that runs down the limb and seems to be following a growth ring and the other that goes across. 

If you are talking about the one that runs down the limb then unless you want to make an 80# bow then 7/8" thick is quite thick.  I would run some thin crazy glue in the crack while clamping it and then start working it down a bit, using a shallow D profile, to see how much of the crack disappears
Title: Re: Hairline crack on side a problem?
Post by: BowEd on November 21, 2016, 09:27:27 am
cool...Yes that's a good idea fix.I'm sorry I sounded so gloom and doom.there is a good chance your bow can make it yet.
Title: Re: Hairline crack on side a problem?
Post by: bradsmith2010 on November 21, 2016, 12:40:47 pm
looks like the crack might go away as suggested,, that crack will dictate the possible draw weight of the bow,,,but sometimes those things turn out better than expected,,  :)
Title: Re: Hairline crack on side a problem?
Post by: George Tsoukalas on November 21, 2016, 04:31:40 pm
When you remove the crack, either use a drawknife or a knife and whittle it out to at least see how far in it goes.
In the diagram go from the top down...thick part down.
Jawge
Title: Re: Hairline crack on side a problem?
Post by: cool_98_555 on November 21, 2016, 05:24:45 pm
I can't remove any more width from the bow.  It's already at 1 1/8", which is narrow enough.  From the crack to the back of the bow it is 5/8", so I think I might just take some more wood off to start with 5/8" thick for the limbs.  I probably won't be able to get 80# like I originally wanted with this bow, but it's better to have a bow that shoots than a broken one I suppose, even if it is lighter than I originally wanted.  I suppose I can pike it later too to increase the weight if it survives.  It's at 68" now and I have a 29" draw so I could probably afford to take it down to 66" and still be ok....
Title: Re: Hairline crack on side a problem?
Post by: bradsmith2010 on November 21, 2016, 06:35:40 pm
if you want 80# ,, you could always sinew back, ,after you get it floor tillered,, or braced,,
Title: Re: Hairline crack on side a problem?
Post by: DC on November 21, 2016, 07:32:02 pm
Do you know how it happened? Were you bending the bow sideways at that point? It's time to attach blame >:D >:D so you don't do the same thing on the next one. ;D
Title: Re: Hairline crack on side a problem?
Post by: cool_98_555 on November 22, 2016, 12:14:58 am
The crack was there when I got the stave, and when I tried to narrow it to avoid thd crack, it was still present
Title: Re: Hairline crack on side a problem?
Post by: cool_98_555 on November 22, 2016, 11:42:06 am
UPDATE:  Just took the bow down to 5/8" thick on the limbs to avoid the crack, and there is no more crack on the bow!  There was also a crack perpendicular to the rings, and I scraped that off without losing too much limb width.  Bow is a little lighter, so I think i'll be piking it from 68" to 64" tonight, then starting on the tillering if string is still aligned through the center.  Wish me luck!
Title: Re: Hairline crack on side a problem?
Post by: bradsmith2010 on November 22, 2016, 08:07:54 pm
great news, sounds like there is a bow in there,, :)