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Deep cook on white wood bows

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simk:
Very cool Dave - thanks for that! and a nice row of nice bows  (-S you rock!
I myself do experiment with heattreating my laminates more and more.
cheers

superdav95:

--- Quote from: bassman211 on September 07, 2023, 12:49:40 pm --- Some say that heat is heat whether with a heat gun ,or by fire hardening. Some will never try the process. Maybe because they are happy with heat gun results. Others swear by the process. Some have tried belly heat treat over an open fire by holding the bow in hand. The big advantage of fire hardening a bow to my way of thinking is that you can get a good shooting bow from green to finished sapling in a short period of time. No real stave work.  Cut a green sapling ,and go to work.  You show some nice examples of how fire hardening works to different degrees.. It may convince some others to give it a try. Good post.

--- End quote ---

Thanks Bassman.  Yes I’m preferable to the hot coal bed cooking 2-3 hours method and keeping close eye on it to be certain not to scorch too quickly.  To eachs own.  I’ve tried many different way with both heat gun and coal bed.  I find the better results with coal bed personally.  I’ve seen improvements with heat gun over raw wood for sure.  My next experiment with heat treatment is to design a long induction electric coil type heater that can be used in the winter months.  I’d like to see a more precise cook on my test bows.  I’m sure others here have thought of the same. 

Dave

superdav95:

--- Quote from: simk on September 07, 2023, 04:23:48 pm ---Very cool Dave - thanks for that! and a nice row of nice bows  (-S you rock!
I myself do experiment with heattreating my laminates more and more.
cheers

--- End quote ---

Thanks Simon.  Yes I could imagine you do as I sense you like to experiment. 

Muskyman:
I’ve cooked a few bows that were less than seasoned over charcoal and I learned a little about it   
Cooked one way to much, had it to close to the coals. My impatience got the best of me on that one. Another I didn’t cook it enough and got quite a bit of string follow. I’ve made a decent pit to cook in after my failures. Looking forward to trying it again and always watching when I see your posts about it. I have seen Chad and Keith’s videos online also one that Clay Hayes did with them.
As always thanks for sharing.

Jim Davis:
I can't remember the numbers and I can't find the info--yet--but something like 70?, 90? percent of the tension and compression stresses are withing 10? percent of the surfaces. The middle (neutral) layer has no tension or compression stress at all, only shear.

So what ever heat does to the middle wood has no effect on performance.

Heat certainly is useful in stiffening or bending a limb. But deep heat, not so much.

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