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Offline bushboy

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chrysals question?
« on: April 20, 2012, 02:08:48 pm »
Is the certain bow designs that lend themself better to chrysal prone wood?thx's
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Offline Bevan R.

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Re: chrysals question?
« Reply #1 on: April 20, 2012, 02:13:34 pm »
Longer and wider.
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Offline Gordon

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Re: chrysals question?
« Reply #2 on: April 20, 2012, 03:24:38 pm »
Quote
Longer and wider.

...and flater
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Gordon

mikekeswick

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Re: chrysals question?
« Reply #3 on: April 20, 2012, 03:49:07 pm »
....and crowned saplings
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Offline PEARL DRUMS

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Re: chrysals question?
« Reply #4 on: April 20, 2012, 04:09:35 pm »
Osage
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Offline Del the cat

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Re: chrysals question?
« Reply #5 on: April 20, 2012, 04:23:08 pm »
And without a foot of unbending handle in the middle >:(.
Del <click, grumpy mode OFF> ;)
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Offline Dauntless

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Re: chrysals question?
« Reply #6 on: April 20, 2012, 04:47:29 pm »
Wood that isn't fully dry will chrysal too.
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Offline bushboy

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Re: chrysals question?
« Reply #7 on: April 20, 2012, 07:16:46 pm »
Hx,s for replys,I really the look of purple heart,it's cheap and easy to find and after to day I now know it's very hard to work. I took devan's advise and roughedit out at 72" 1 1/2 up to 12" from the tips then down to 3/8".a very bendy handle and plan to back it with bamboo,glue it up with aslight reflex in the tips.yeah osage is hard to come by in canada or maybe I'm not looking in the right places!I did manage to buy a very knarly osage board a while back,terrible grain and all @ 22 bucks pbfg!have to say it was the most beautiful looking and easy wood to work with,peels off like chocolate!wish it was easier to find!
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Some like motorboats,I like kayaks,some like guns,I like bows,but not the wheelie type.

Offline Bevan R.

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Re: chrysals question?
« Reply #8 on: April 20, 2012, 07:21:49 pm »
Purpleheart is very prone to chrysal. I have made several and they all eventually did. What draw length and weight are you shooting for?
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Bowmakers are a little bent, but knappers are just plain flaky.

Offline bushboy

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Re: chrysals question?
« Reply #9 on: April 20, 2012, 07:47:50 pm »
50@28 would do nicely!well it not imploding I guess!
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Some like motorboats,I like kayaks,some like guns,I like bows,but not the wheelie type.

Offline Bevan R.

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Re: chrysals question?
« Reply #10 on: April 20, 2012, 07:54:22 pm »
Make it as long, wide limbs bending evenly with as flat a belly as you can make.
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Bowmakers are a little bent, but knappers are just plain flaky.

Offline DarkSoul

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Re: chrysals question?
« Reply #11 on: April 21, 2012, 06:13:06 pm »
Quite frankly, a 1½" wide bamboo backed purpleheart bow is just begging for chrysals. You asked for a design that doesn't lend itself for chrysals. Well, we gave you advice, but backing a compression weak wood, while leaving it narrow, certainly wasn't on our list of recommendations ;)

This would be my advice when using purpleheart, which is very prone to chrysals:
-Do not use bamboo for a backing; use a lighter wood such as maple or ash.
-Trap the backing, and leave the belly flat.
-Make the limbs at least 2" wide.
-Let it bend through the handle.
-74" for a 28" draw.
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Offline JW_Halverson

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Re: chrysals question?
« Reply #12 on: April 21, 2012, 06:36:39 pm »
Backing with something that keeps the splinters from lifting and has plenty of 'give' may help.  Think about backing with rawhide or even brown paper bag.  Make the back a little bit narrower than the belly (trapping...short for trapezoid, the shape of the cross section of the limb) could asist, too.
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Offline Bevan R.

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Re: chrysals question?
« Reply #13 on: April 21, 2012, 07:06:27 pm »
Not to argue JW, but I don't think paper is enough for purpleheart. I have always used hickory. Rawhide would be good. A strong linen.
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Bowmakers are a little bent, but knappers are just plain flaky.

Offline JW_Halverson

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Re: chrysals question?
« Reply #14 on: April 21, 2012, 07:08:50 pm »
I'll defer to Bevan on this. 
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