scepticus
03-28-2005, 05:43 PM
I'm itching to build a boat...
I like the poo duck (what is a poo duck anyway?) for various reasons but I don't like glued ply. So, starting with the belief that I can do just about anything, I started a conversation with myself that went something like this:
why not build the poo duck with real wood?
because the planks are too wide, I'll never find lumber that wide.
ok, so maybe I could use more narrower planks.
but then I'd have to re-line the planking.
no problem... I can do that... I think.
So, I set out to do just that. first I smoothed out the midships frame, kept the sheer line as much as possible, kept the profile as much as possible, kept the shape of the stem, smoothed out the flats on the transom and carved a half model at 1" == 1'. Happy with that, I took measurements off the carving, and lofted a 2" == 1' version and then sort of built that with scaled down "lumber" to see how it might work. Here's what I built:
http://www.imagestation.com/picture/sraid162/pc1c0e1181b8658925cae2292cd014767/f4ac079e.jpg
I left the building molds in place to help hold the thing together. In the real version I plan to use bent oak ribs.
assuming I get this right, more pictures can be found here test model (http://www.imagestation.com/album/pictures.html?id=2128895100)
Now, aside from all my tools being way too big for this project, everything went pretty well, but it did raise a couple questions...
The planks are more curved than I'd hoped, which I worked around by scarfing straight planks at an angle, but that in turn introduces more scarfs than I really wanted and not placed ideally. So, with a 12-to-1 epoxy glued scarf is this a real problem? If so, I'll restart my search for the right boat to build.
btw: the model is built of cypress because that's what I had on hand. The plan is to plank with atlantic white cedar.
I like the poo duck (what is a poo duck anyway?) for various reasons but I don't like glued ply. So, starting with the belief that I can do just about anything, I started a conversation with myself that went something like this:
why not build the poo duck with real wood?
because the planks are too wide, I'll never find lumber that wide.
ok, so maybe I could use more narrower planks.
but then I'd have to re-line the planking.
no problem... I can do that... I think.
So, I set out to do just that. first I smoothed out the midships frame, kept the sheer line as much as possible, kept the profile as much as possible, kept the shape of the stem, smoothed out the flats on the transom and carved a half model at 1" == 1'. Happy with that, I took measurements off the carving, and lofted a 2" == 1' version and then sort of built that with scaled down "lumber" to see how it might work. Here's what I built:
http://www.imagestation.com/picture/sraid162/pc1c0e1181b8658925cae2292cd014767/f4ac079e.jpg
I left the building molds in place to help hold the thing together. In the real version I plan to use bent oak ribs.
assuming I get this right, more pictures can be found here test model (http://www.imagestation.com/album/pictures.html?id=2128895100)
Now, aside from all my tools being way too big for this project, everything went pretty well, but it did raise a couple questions...
The planks are more curved than I'd hoped, which I worked around by scarfing straight planks at an angle, but that in turn introduces more scarfs than I really wanted and not placed ideally. So, with a 12-to-1 epoxy glued scarf is this a real problem? If so, I'll restart my search for the right boat to build.
btw: the model is built of cypress because that's what I had on hand. The plan is to plank with atlantic white cedar.