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Author Topic: Wood steaming?  (Read 2404 times)

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Offline BrokenArrow

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Wood steaming?
« on: September 25, 2014, 11:46:36 am »
I was going to steam a stave of hickory backed jatoba.
Should I shallac it first to keep the moisture out?
What are the benefits of this over having the steam penetrate the wood?
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Offline Pat B

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Re: Wood steaming?
« Reply #1 on: September 25, 2014, 11:51:42 am »
What glue was used to back the bow? Steam and heat can degrade some glues.
Why are you steaming the bow?
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Make the most of all that comes and the least of all that goes!    Pat Brennan  Brevard, NC

Offline BrokenArrow

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Re: Wood steaming?
« Reply #2 on: September 25, 2014, 01:29:00 pm »
Smooth on EA 40 mixed 2:1.
I' going to make it shorter (60 inches in length) and I note jatoba is good for steam bending
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Offline PEARL DRUMS

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Re: Wood steaming?
« Reply #3 on: September 25, 2014, 01:57:14 pm »
Sounds risky to me.
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Offline DavidV

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Re: Wood steaming?
« Reply #4 on: September 25, 2014, 03:23:45 pm »
That glue is going to let go before you can start bending it.
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Offline Pat B

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Re: Wood steaming?
« Reply #5 on: September 25, 2014, 05:23:28 pm »
If nothing else the glue line will probably prevent the wood form bending and holding the bend.
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Make the most of all that comes and the least of all that goes!    Pat Brennan  Brevard, NC

Offline Pappy

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Re: Wood steaming?
« Reply #6 on: September 26, 2014, 07:52:41 am »
Wouldn't do it if it was mine  :)
 Pappy
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Offline DarkSoul

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Re: Wood steaming?
« Reply #7 on: September 26, 2014, 08:21:21 am »
Quote from: BrokenArrow on September 25, 2014, 01:29:00 pm
I note jatoba is good for steam bending
Where did you read that? I'm pretty sure the opposite is true.
Also, 60" is rather short for a wooden bow. Unless the draw length is kept below 27" or so.
I wouldn't apply heat or steam to a laminated bow. Instead, you could kerf bend the tips, to induce some recurves.
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Offline BrokenArrow

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Re: Wood steaming?
« Reply #8 on: September 26, 2014, 11:55:22 am »
The deed has been done and all is well so far. The Smooth On EA 40 held and it is cooling. Steamed for 2 hours.
I mixed the EA 40 2:1 and it should hold to 217 degrees F and the steam in 211 degrees F. Not much of a margin I admit.
Will post results in a week.
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