Author Topic: Broken limb- what Glue?  (Read 3015 times)

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Offline leif

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Broken limb- what Glue?
« on: May 28, 2019, 01:33:15 am »
there I was finishing with applying perry reflex linen backing for my first time, I heard a series of tiny cracks. after 1h the bow decided to crack on belly side. see picture below. first reaction was to laugh  (lol)
 I'm gonna try to glue it back just for the experience. (I used hide glue for backing.)
in this situation is it better to use hide glue or a slow curing epoxy ? I have no previous experience with epoxy so I don't know if it's runny enough to go deep into the crack. Cyanoacrylate is runny enough but I think it's gonna take me more than 5min to apply, fit and clamp, I don't want to be hasty.

I haven't bought epoxy to test yet because I can't find any near me....

Offline Ryan Jacob

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Re: Broken limb- what Glue?
« Reply #1 on: May 28, 2019, 01:45:00 am »
I don’t think any glue can fix that. Maybe a belly patch would work.

Offline leif

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Re: Broken limb- what Glue?
« Reply #2 on: May 28, 2019, 02:01:55 am »
@ Ryan Jacob    I try to be an optimist :P I see it as a kind of splice joint, if v-splices work why not this?
after glueing it I'm gonna see what I can do with a belly patch and maybe thicken the backing at that spot to keep it stiff.

Offline simson

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Re: Broken limb- what Glue?
« Reply #3 on: May 28, 2019, 02:35:59 am »
Looking at that crack I would say this is no bowwood or it is too dry. Have you induced reflex with the heatgun? Is this red oak or black walnut?

Through this piece to the firewood and make a fresh bow, don't waste your energy.
Simon
Bavaria, Germany

Offline leonwood

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Re: Broken limb- what Glue?
« Reply #4 on: May 28, 2019, 05:21:46 am »
What Simon said, don't waste your time on this one and start a new bow! Another thing, you might want to read up on perry reflex a bit. Glueing linen to the back of a bow with reflex is not perry reflex and will not help the performance of a bow either. Linnen will only help prevent lifting splinters so next time just glue it on straight.

Offline Eric Krewson

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Re: Broken limb- what Glue?
« Reply #5 on: May 28, 2019, 05:23:10 am »
I have repaired more bows than most folk here but have learned there is a point where it can't be done and make a dependable shooter. Your bow has reached that point.

Offline Hawkdancer

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Re: Broken limb- what Glue?
« Reply #6 on: May 28, 2019, 09:35:33 am »
Wrap it with bright colored thread and hang it on the wall!  Looks like that "crack" is almost a complete break!
Hawkdancer
Life is far too serious to be taken that way!
Jerry

Offline leif

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Re: Broken limb- what Glue?
« Reply #7 on: May 28, 2019, 10:47:59 am »
i couldn't wait, i just used hide glue . now we wait...
it was difficult to bent it back to close the gaps. yeah i don't think it will make it but that doesn't mean i won't try. I have experienced tension breaks but never a compression break. this will become a working bow or my first compression break on a tiller tree.

Offline George Tsoukalas

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Re: Broken limb- what Glue?
« Reply #8 on: May 28, 2019, 12:09:56 pm »
Looks awfully  thick to bend. I would  say it is over for that stave. Jawge
Set Happens!
If you ain't breakin' you ain't makin!

Online Deerhunter21

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Re: Broken limb- what Glue?
« Reply #9 on: May 28, 2019, 12:17:30 pm »
oh man that looks bad. I dont know what you can do. rawhide bandaid?
Life before death. Strength before weakness. Journey before destination.

Offline PatM

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Re: Broken limb- what Glue?
« Reply #10 on: May 28, 2019, 02:26:10 pm »
i couldn't wait, i just used hide glue . now we wait...
it was difficult to bent it back to close the gaps. yeah i don't think it will make it but that doesn't mean i won't try. I have experienced tension breaks but never a compression break. this will become a working bow or my first compression break on a tiller tree.

 It is a tension break.  You've just broken it on the compression side.

Offline Bryce

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Re: Broken limb- what Glue?
« Reply #11 on: May 28, 2019, 05:14:15 pm »
Just splice in a new limb. Or start over...
Clatskanie, Oregon

Offline bradsmith2010

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Re: Broken limb- what Glue?
« Reply #12 on: May 28, 2019, 06:47:33 pm »
 :NN

gutpile

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Re: Broken limb- what Glue?
« Reply #13 on: May 29, 2019, 06:51:15 am »
toast.. not worth fooling with ...gut

Offline sleek

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Re: Broken limb- what Glue?
« Reply #14 on: May 29, 2019, 10:58:21 am »
Hide glue was a solid choice. However. If you didnt get those pieces back perfectly, you will hear the bow crackle then snap right there when you bend it.
Tread softly and carry a bent stick.

Dont seek your happiness through the approval of others