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Author Topic: my hemp backed Hazel bow has lost weight and gained set!?!  (Read 9601 times)

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Offline sieddy

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my hemp backed Hazel bow has lost weight and gained set!?!
« on: March 10, 2015, 04:39:08 pm »
Hi fellas as the title says the Hazel stave bow that at the weekend was pulling 44#@26" and had an inch and a half of string follow. Is now showing 36#@26" on my scale and has a ton of set! :o
I can see how the backing could be inhibiting the bow from returning to straight but how could it reduce the drawweight?
I'm a bit gutted as it was my most successful bow to date- ah well another lesson learned!
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Offline vinemaplebows

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Re: my hemp backed Hazel bow has lost weight and gained set!?!
« Reply #1 on: March 10, 2015, 04:44:59 pm »
Heat treat it, hazel responds well to heat treatment.
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Offline wizardgoat

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Re: my hemp backed Hazel bow has lost weight and gained set!?!
« Reply #2 on: March 10, 2015, 04:48:39 pm »
Do have any pics of it? Braces or drawn?
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Offline sieddy

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Re: my hemp backed Hazel bow has lost weight and gained set!?!
« Reply #3 on: March 10, 2015, 04:49:16 pm »
Hey Vmb I already toasted the back before I'd backed it! But I will take the backing off and heat treat it some more. Thanks.
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Offline bubby

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Re: my hemp backed Hazel bow has lost weight and gained set!?!
« Reply #4 on: March 10, 2015, 04:49:48 pm »
When you glued it up if you induced a little reflex it might not have gained all that set
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Offline sieddy

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Re: my hemp backed Hazel bow has lost weight and gained set!?!
« Reply #5 on: March 10, 2015, 04:50:55 pm »
Hey Wiz- no I've only got a couple of pics from before I backed it.
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Offline PEARL DRUMS

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Re: my hemp backed Hazel bow has lost weight and gained set!?!
« Reply #6 on: March 10, 2015, 04:53:50 pm »
You heat treated the back? Under the backing?
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Offline sieddy

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Re: my hemp backed Hazel bow has lost weight and gained set!?!
« Reply #7 on: March 10, 2015, 04:54:13 pm »
The backing fibres were quite wet (I dipped them in water then wood glue squeezed the excess out then layes them on) Do you think the damp could be the culprit?
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Offline sieddy

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Re: my hemp backed Hazel bow has lost weight and gained set!?!
« Reply #8 on: March 10, 2015, 04:55:18 pm »
Hi Pearl drums-  no I heated it before I put the backing on.
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Offline PEARL DRUMS

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Re: my hemp backed Hazel bow has lost weight and gained set!?!
« Reply #9 on: March 10, 2015, 04:55:56 pm »
Why did you heat treat a bows back?
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Only when the last tree has died and the last river has been poisoned and the last fish has been caught will we realize we cannot eat money.

Offline sieddy

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Re: my hemp backed Hazel bow has lost weight and gained set!?!
« Reply #10 on: March 10, 2015, 04:57:40 pm »
No sorry I mustn't have been clear. I heated the belly.
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"No man ever broke his bow but another man found a use for the string" Irish proverb

Offline sieddy

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Re: my hemp backed Hazel bow has lost weight and gained set!?!
« Reply #11 on: March 10, 2015, 04:59:16 pm »
I see now I was clear and also wrong. I definitely didn't heat the back!  :o
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Offline bubby

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Re: my hemp backed Hazel bow has lost weight and gained set!?!
« Reply #12 on: March 10, 2015, 04:59:36 pm »
The backing fibres were quite wet (I dipped them in water then wood glue squeezed the excess out then layes them on) Do you think the damp could be the culprit?


Yup the moisture wicked into the bow basicly making it warp, if you would have added some reflex it should have been fine after it dried out
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failure is an option, everyone fails, it's how you handle it that matters.
The few the proud the 27🏹

Offline PEARL DRUMS

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Re: my hemp backed Hazel bow has lost weight and gained set!?!
« Reply #13 on: March 10, 2015, 05:00:15 pm »
Ok, I was about to ask just what part of that you missed the last year!

If the bow is challenged, i.e. too short, too narrow, poor tiller and so on. It probably just caught up to you after a bunch of shooting. I see quite a few bows posted that claim 1/2" set, 3/4" set and so on. Maybe that's true hot off the press, but lets talk after 500-1000 shots. Most of us build too many bows to even hit that number with a good share of them.
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Only when the last tree has died and the last river has been poisoned and the last fish has been caught will we realize we cannot eat money.

Offline sieddy

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Re: my hemp backed Hazel bow has lost weight and gained set!?!
« Reply #14 on: March 10, 2015, 05:05:57 pm »
Damn this game is hard! :o
Thanks as always for the input fellas.  :)
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"No man ever broke his bow but another man found a use for the string" Irish proverb
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