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#1
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how do you bend wood into the boat shape?
William R. Watt wrote:
Old dry wood has to soak up moisture before it can be heated to bend. Not in my experience. I've seen no difference in bending between dry stock and the same stock that's been soaked in water for days or even weeks. It's the heat that makes the wood bend-able, not the moisture. Steaming is simply a way of heating the wood rapidly to the correct temperature for bending, which - luckily for us - happens to be around the boiling point of water. |
#2
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how do you bend wood into the boat shape?
Brian Nystrom ) writes:
William R. Watt wrote: Old dry wood has to soak up moisture before it can be heated to bend. Not in my experience. I've seen no difference in bending between dry stock and the same stock that's been soaked in water for days or even weeks. It's the heat that makes the wood bend-able, not the moisture. Steaming is simply a way of heating the wood rapidly to the correct temperature for bending, which - luckily for us - happens to be around the boiling point of water. I have no experience. Just quoting what I've read, eg. TF Jones who soaks old wood before steam bending. -- ------------------------------------------------------------------------------ William R Watt National Capital FreeNet Ottawa's free community network homepage: www.ncf.ca/~ag384/top.htm warning: non-freenet email must have "notspam" in subject or it's returned |
#3
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how do you bend wood into the boat shape?
William R. Watt wrote: Brian Nystrom ) writes: William R. Watt wrote: Old dry wood has to soak up moisture before it can be heated to bend. Not in my experience. I've seen no difference in bending between dry stock and the same stock that's been soaked in water for days or even weeks. It's the heat that makes the wood bend-able, not the moisture. Steaming is simply a way of heating the wood rapidly to the correct temperature for bending, which - luckily for us - happens to be around the boiling point of water. I have no experience. Just quoting what I've read, eg. TF Jones who soaks old wood before steam bending. When I've soaked wood, all it did was make is swell so it no longer fit where it was supposed to, such as in a mortise. Either that, or if it was trimmed to fit after steaming, it shrank as it dried and became loose. Soaking didn't seem to make any difference in the bend-ability of the wood. |
#4
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how do you bend wood into the boat shape?
Brian Nystrom says:
Soaking didn't seem to make any difference in the bend-ability of the wood. The old man always used to soak white oak before bending (24 hrs in the bathtub), whether to see if it had a natural inclination to bend in a particular direction, to help with bending, or some other reason I am not sure. He was the builder, and I didn't question it. He bent a lot of white oak ribs in his day. Steve |
#5
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how do you bend wood into the boat shape?
Stephen Baker wrote: Brian Nystrom says: Soaking didn't seem to make any difference in the bend-ability of the wood. The old man always used to soak white oak before bending (24 hrs in the bathtub), whether to see if it had a natural inclination to bend in a particular direction, to help with bending, or some other reason I am not sure. He was the builder, and I didn't question it. He bent a lot of white oak ribs in his day. If you're interested, try this test. Take a strip of whatever wood you want to bend and soak it for 24 hours. Then, take a plane and see how many strokes it takes on the surface to get down to dry wood. I scarf thin stock for kayak coamings and the most penetration I've seen in red oak or white ash is ~.010" on the sides and edges after soaking for 24 hours, with perhaps 1/4" penetration at the ends. I find it very difficult to believe that this could possibly make any difference in the bend-ability of the wood, since steaming alone will create similar penetration in only a few minutes. As I mentioned previously, I found no difference in bending between soaked stock and dry stock from the same board, so I don't bother with soaking any longer. It strikes me as one of those things that seems intuitively correct, but really doesn't help. |
#6
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how do you bend wood into the boat shape?
Brian N says:
It strikes me as one of those things that seems intuitively correct, but really doesn't help. I dunno. Dad had (at the tme I last saw him soaking oak) bee nbuilding, designing and restoring boats for some 30-odd years. I know he wasn't a type "A" personality, so can't imagine him wasting time or effort on something that wasn't necessary to produce the perfect product. Sadly, he died in '83, so I can't ask him to find out. I'll see if I can track down his last apprentice and see what she has to say. Steve |
#7
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how do you bend wood into the boat shape?
Stephen Baker wrote:
Brian N says: It strikes me as one of those things that seems intuitively correct, but really doesn't help. I dunno. Dad had (at the tme I last saw him soaking oak) bee nbuilding, designing and restoring boats for some 30-odd years. I know he wasn't a type "A" personality, so can't imagine him wasting time or effort on something that wasn't necessary to produce the perfect product. Sadly, he died in '83, so I can't ask him to find out. I'll see if I can track down his last apprentice and see what she has to say. I'd be curious to know if he ever did a comparison between soaking and not. I haven't seen any definitive tests and am just working off my own experience and that of others I know who've tried it both ways. |
#8
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how do you bend wood into the boat shape?
Brian Nystrom ) writes:
When I've soaked wood, all it did was make is swell so it no longer fit where it was supposed to, such as in a mortise. Either that, or if it was trimmed to fit after steaming, it shrank as it dried and became loose. Soaking didn't seem to make any difference in the bend-ability of the wood. softwoods would have more of a tendancy to swell. TF Jones writes that a nice piece of 15-20 year old oak needs soaking before steam bending. A 1"x1" piece of clear oak properly steamed can be tied in a knot. Not something I've ever tried. -- ------------------------------------------------------------------------------ William R Watt National Capital FreeNet Ottawa's free community network homepage: www.ncf.ca/~ag384/top.htm warning: non-freenet email must have "notspam" in subject or it's returned |
#9
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how do you bend wood into the boat shape?
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#10
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how do you bend wood into the boat shape?
Ive done it using 2" copper pipe heated on a gas stove
"Max Camirand" wrote in message ... On 7 Mar 2004 00:01:32 GMT, (William R. Watt) wrote: A 1"x1" piece of clear oak properly steamed can be tied in a knot. Not something I've ever tried. I'll try it sometime, and post pictures :-) -m |
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