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Author Topic: Tempering rig pics  (Read 3519 times)

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Offline Marc St Louis

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Re: Tempering rig pics
« Reply #15 on: November 10, 2011, 09:39:05 pm »
The high heat of a heat gun plasticizes the wood and allows it to be reshaped into a different form.  It also seems to harden the wood, possibly through a change in its density by driving the air in the cells out.  Steam actually seems to weaken wood a bit.
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Home of heat-treating, Corbeil, On.  Canada

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Offline JW_Halverson

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Re: Tempering rig pics
« Reply #16 on: November 10, 2011, 10:01:47 pm »
If you were to try dry heat bending or heat tempering green wood it would check and crack on you so bad as to probably ruin any chances of getting a bow from it. 

Dry wood, dry heat. 
Wet wood, wet heat.
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Guns have triggers. Bicycles have wheels. Trees and bows have wooden limbs.

Offline soy

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Re: Tempering rig pics
« Reply #17 on: November 11, 2011, 02:27:59 am »
Words to live by, jw ;)
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Is this bow making a sickness? or the cure...

Offline PEARL DRUMS

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Re: Tempering rig pics
« Reply #18 on: November 14, 2011, 09:13:55 am »
J-dub is right on. Green wood will often open big crevices up. I have had it happen over night while it cooled on the form, even though it was perfect when I shut the shop lights off the day before. The piece I am working now is bone dry white ash.
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Offline adb

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Re: Tempering rig pics
« Reply #19 on: November 14, 2011, 11:53:10 am »
If you have a chace, check out Marc St Louis' article in TB Vol4 on heat treating. It covers everything.
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