Primitive Archer
Main Discussion Area => Bows => Topic started by: Scallorn on April 03, 2018, 08:50:47 pm
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So I'm working on my second Osage stave bow and so far everything is going well. The only way I've ever put reflex into limbtips is to rub with oil and heat until soft. Is boiling better? If so, how long do you boil osage before it becomes soft?
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With seasoned osage I think your original method with dry heat and oil is best but some prefer steaming and boiling with thicker wood. It's been a long time since I steamed osage but it seems 30 minutes of so should do it. I think I'd seal the wood first with shellac to prevent checking.
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When reflexing the outer limb(not sharp recurves) on dry wood, I just use the heat gun. No oil. I've never used oil and never had a problem. I like to do it when the limbs are beginning to flex. Sometimes the back is sealed with shellac, but often it's not. If I know it's dry, it doesn't need it.
Perhaps we should ask you first... what degree of curve you plan to bend it into?
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I've had osage staves that were 10 years dry that checked when I used heat on them. I keep spray shellac on my work bench all the time and use it often. I also use oil when I use heat to bend osage. I think it helps the wood hold the heat longer, helps it penetrate and keeps it from scorching. Right or wrong these things have worked for me for many, many years of building bows.
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If the Osage is below 9% I have used a heat Gun on over a hundred without oil or anything else. No problem. If you are reflexing at the ends you need to hold the heat pretty far from the bow say 2-1/2 inches. Let the weight of the bow pull in the reflex with the heat. Warning keep one hand under the bow as it starts to bend . Sometimes they deside to go quickly and it can crack across the limb tip at say two to three inches from the end of the bow. You can take the drop off the belly side of the limb and practice on it if you used a band saw to rough the bow. Arvin
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When reflexing the outer limb(not sharp recurves) on dry wood, I just use the heat gun. No oil. I've never used oil and never had a problem. I like to do it when the limbs are beginning to flex. Sometimes the back is sealed with shellac, but often it's not. If I know it's dry, it doesn't need it.
Perhaps we should ask you first... what degree of curve you plan to bend it into?
+1.We should know what your plans are.
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+ 1 for using oil. Never had a crack/check start with oil, but I have without oil.
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what kind of oil??? Burt
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I'm really liking the boiling method.
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Burt, just about anything will work. Lard, peanut oil, shortening. I've been using coconut oil. I've heard of guys using lemon or orange oil.
Some salad oils have a very low smoke point, which you can google, so I avoid those.
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I use olive oil because that's what I cook with. Any oil will work.
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Maybe I need to try oil. Is there a benefit from the oil more than the wood drying to fast to the point of cracking ? Arvin