kramergwt wrote:Try googling "strip built kayak" and check out images. I have a book that will come up in that search "The Strip Built Sea Kayak" by Nick Schade. It opens your mind to alternate construction techniques. I also think Advisory Circular 43.13 is good too, for learning. That was the FAA spec for wooden airplanes in the early years of aviation.
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Thanks, that looks cool! I had originally intended to do this with pmf but changed my mind to wood so it would go quicker and be tougher against rocks. Doing this in strips would work everywhere except where the 2 sides of the lid meet the top of the lid. Any sort of a brace there for the wood to rest on would have to be a compound curve. This is the spot i am having trouble getting the 1/8th to do.
Thanks for the info, i like the strip built wood look and idea, i think i want to try that on somethjng in the future.
tony.latham wrote:or $40 for baltic burch
Ouch. Somebody is ripping you off. I'm on the edge of nowhere, in Salmon, Idaho. It's a one-lumberyard town and three hours from the nearest box-store town. When I need 5x5 sheets of 1/8" Baltic, it's a custom order and costs $14 per sheet.
Check the price from a different supplier. 1/8" Baltic likes to bend and it's glue is waterproof.
But remember, it only likes to bend in one direction. Tony
$20 CAD per sheet, after conversion thats like $1/sheet more than you pay.
aggie79 wrote:"Russian Birch" 3mm (1/8"), 5' x 5' ply is available near me for $19 per sheet.
I used the 3mm to skin my teardrop. The lower front radius is 6". The lower rear hatch radius is 10".
You aren't trying to to a compound bend (in more than 1 direction) are you?
I am not trying to get the wood to bend in a compound curve, but one joint is a compound curve so there is no rib there.
Its where the 2 sides of the lid meet the top of the lid.
drhill wrote:I think he means $40 cdn for 2 sheets. Windsor plywood has 1/8" Baltic Birch and it was $19.99 3 yrs ago. I haven't bought any since. If you look at the picture of the tongue box on my trailer, that is 1/8" baltic birch and the bend radius is 16". It was not wetted before installation and was glued in place with no fasteners as I like a clear finish.
Pretty sure he is not trying to do a compound bend, that won 't even work with paper.
Yes! Windsor plywood is the place im going to.
Not sure what my bend radius is. The one photo shows the bend i need it to go around well but im not sure on the measurement.
So i got a sample piece of frp and its super flexible. I would have to make some kind of support behind all of it, not sure if high density foam would be strong enough. Or does frp come in different thicknesses?
Then i went to windsor plywood to buy 1/8th bendable plywood. The only sheet they had that wast flexable the 4ft way was broken up and not strong to begin with. Bought a sheet that bends the 8ft way but its hardly more flexable than regular plywood. The 1/4in bendable ply was far more flexable than it. I figured it must have been the wrong stuff so i drove to another windsor plywood to see theirs and it was all the same. Except they had a sheet of bendable ply the 4ft length that was in good shape. Was gonna buy it but they wanted $70/sheet. It wouldnt have fit in my car nice anyway so i told them i would have to decide between baltic birch and the bendable ply tonight.
Im sort of leaning towards trying the baltic birch first.
Has anyone here steam bent plywood?
It will be fine without on the bottom half of the tongie box. Part im worried about is on the top half where the sides and top meet. No brace there.
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