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Author Topic: Straightening twist?  (Read 1935 times)

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Offline Blaflair2

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Straightening twist?
« on: October 07, 2013, 02:08:39 pm »
So how would I go about heat treat bending/straightening? All at once? If I make a form to bend some will that straighten the limbs twist?
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Offline PEARL DRUMS

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Re: Straightening twist?
« Reply #1 on: October 07, 2013, 02:54:09 pm »
Depending on the severity of the twist, you can simply toast it and clamp into reflex as you move along. If the twist seems severe enough? Get a bunch of it out first. Then come back and temper it in a day or three.
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Offline Blaflair2

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Re: Straightening twist?
« Reply #2 on: October 07, 2013, 03:33:43 pm »
It's this stupid HHB stave lol. One limb slightly a twists from the fade just about. I was thinking if I made a form a did it all at once I could tweak it as I go? I planned on making a back to the form so I could cover all my axis. Something I can block against to line it up better. Thinking of a 5 curve or recurve. Natural reflex from the handle. Almost equal. It's is 68" long and 2" wide
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Offline PEARL DRUMS

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Re: Straightening twist?
« Reply #3 on: October 07, 2013, 03:39:43 pm »
Adding a back is good, but captures heat also. It does allow the blank to be straightened in both directions, and I like that. I prefer to apply all my heat at once, regardless of amount. One good cookin' is better then four small coookin's in my book.
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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 Blaflair2

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Re: Straightening twist?
« Reply #4 on: October 07, 2013, 03:45:13 pm »
Ok thanks. Hopefully I can make it work
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Offline Pat B

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Re: Straightening twist?
« Reply #5 on: October 07, 2013, 03:53:28 pm »
You can use small wedges to correct twists as you go out each limb to straighten it and/or add reflex. If the twist is not too bad you don' have to do anything with it. Wood bows can take some twist and still shoot well.
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Make the most of all that comes and the least of all that goes!    Pat Brennan  Brevard, NC

Offline Blaflair2

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Re: Straightening twist?
« Reply #6 on: October 07, 2013, 03:56:19 pm »
I'll try and post a pic tonight. Is veg oil ok to put on for dry heat?
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Offline Pat B

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Re: Straightening twist?
« Reply #7 on: October 07, 2013, 04:05:00 pm »
Yes, veg oil is what I use(actually olive oil). The oil will prevent it from scorching. If you plan on tempering the belly no oil is needed. Do give your bow a few days after heating before stressing it.
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Make the most of all that comes and the least of all that goes!    Pat Brennan  Brevard, NC

Don Case

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Re: Straightening twist?
« Reply #8 on: October 07, 2013, 04:11:29 pm »
Doesn't the olive oil affect how well the finish sticks?
Don
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Offline Pat B

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Re: Straightening twist?
« Reply #9 on: October 07, 2013, 04:34:20 pm »
Don, by the time I scrape the belly to reach tiller I have eliminated the oil in the wood. If I plan on backing the bow, either with sinew or skins or wood I wash it with Dawn dish soap and rince with boiling water. That will get the oil out.
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Make the most of all that comes and the least of all that goes!    Pat Brennan  Brevard, NC

Don Case

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Re: Straightening twist?
« Reply #10 on: October 07, 2013, 05:25:30 pm »
Thanks Pat
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Offline Blaflair2

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Re: Straightening twist?
« Reply #11 on: October 07, 2013, 06:17:38 pm »
So if I'm tempering while bending don't use oil?
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Offline Pat B

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Re: Straightening twist?
« Reply #12 on: October 07, 2013, 06:24:35 pm »
correct!
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Make the most of all that comes and the least of all that goes!    Pat Brennan  Brevard, NC

Offline Blaflair2

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Re: Straightening twist?
« Reply #13 on: October 07, 2013, 07:43:48 pm »
Ok thanks again Pat!
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Offline Blaflair2

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Re: Straightening twist?
« Reply #14 on: October 08, 2013, 02:37:12 am »
So this is the twist in talking about. I'm thinking it'll work its self out during the reflexing and bending. Thanks again guys
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