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#1
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Rub rails
I need to replace the rub rails in a 15' Lyman. I've shaped the bevel
on the rear sections which have no curvature and cut a scarf on the end. I now need a 12' section of curved rail to mate to this scarf. I really would like to shape them first but am at a loss on how to do this with a straight oak rail. When shaping (with no4 stanley) the bevel with the rear sections, I've tried various techniques with a bevel gauge, but never found a great technique of matching the bevel hull to rail. Anyone care to share their secret? I suspect there is a simple way to do this. Lasty, I have read the SB FAQ and feel that I can assemble a steam setup, but I don't know if I should shape the bevel first and then steam or vice versa. Am I overlooking something? Many thanks in advance!!! SS |
#2
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I'd bend first and bevel second. It makes the amount of bend less
critical. (Remember to overbend somewhat. It straightens easily. For the bevel, I'd get close by spiling or eyeball and then use a variation on the carbon paper trick of letting the boat tell you where the high spots are. Roger http://home.earthlink.net/~derbyrm wrote in message oups.com... I need to replace the rub rails in a 15' Lyman. I've shaped the bevel on the rear sections which have no curvature and cut a scarf on the end. I now need a 12' section of curved rail to mate to this scarf. I really would like to shape them first but am at a loss on how to do this with a straight oak rail. When shaping (with no4 stanley) the bevel with the rear sections, I've tried various techniques with a bevel gauge, but never found a great technique of matching the bevel hull to rail. Anyone care to share their secret? I suspect there is a simple way to do this. Lasty, I have read the SB FAQ and feel that I can assemble a steam setup, but I don't know if I should shape the bevel first and then steam or vice versa. Am I overlooking something? Many thanks in advance!!! SS |
#3
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Thanks Roger!
Would you use the hull for clamping after steamed or build a jig for the curved part? I'll have to get out Boatbuilding and read up on spiling, I thought that sort of thing was for planks/strakes. Thanks again, SS |
#4
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If you added shims to get the overbend. Like I say, it's easy to unbend a
little and you don't want any significant built-in tension waiting for a misguided docking evolution to cause a SPROING. Spiling works for any task where two irregular shapes come together. The simplest form is to just lay a wooden pencil on one surface and draw on the piece to be cut. (You don't have to cut to the line, but there could be some shapes that would introduce an error if you offset the cut a constant distance from the line.) A shoemaker's rasp and filled epoxy are both wonderful inventions. Roger http://home.earthlink.net/~derbyrm wrote in message oups.com... Thanks Roger! Would you use the hull for clamping after steamed or build a jig for the curved part? I'll have to get out Boatbuilding and read up on spiling, I thought that sort of thing was for planks/strakes. Thanks again, SS |
#5
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I cannot imagine you will need to steam bend rubrails on the Lyman. You
will need lots of clamps however. Cutting the bevel on the end is the last step! wrote in message oups.com... I need to replace the rub rails in a 15' Lyman. I've shaped the bevel on the rear sections which have no curvature and cut a scarf on the end. I now need a 12' section of curved rail to mate to this scarf. I really would like to shape them first but am at a loss on how to do this with a straight oak rail. When shaping (with no4 stanley) the bevel with the rear sections, I've tried various techniques with a bevel gauge, but never found a great technique of matching the bevel hull to rail. Anyone care to share their secret? I suspect there is a simple way to do this. Lasty, I have read the SB FAQ and feel that I can assemble a steam setup, but I don't know if I should shape the bevel first and then steam or vice versa. Am I overlooking something? Many thanks in advance!!! SS |
#6
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Spiling is like scribing, huh? I did this for the other rail sections
with decent results. The hardest part doing these sections are making the bevel so to keep the top of the rail in plane with the deck beams and what not. I'm kind of assuming most boats are like this, but maybe not. The deck ply is mounted on top of the rail. More fun is the parts I'll be working on have a changing bevel from fore (down) to aft (up). I'll admit I originally thought when I bought the boat, I'd just have to run 1" stock through the table saw for a bevel, caulk, and stick some screws in it. I have newfound respect for boatwrights. However, lots of clamps I have! Most guys around here have advised to laminate, but I'm going for original construction. I tried clamping air dried stock top it once but wimped out from being aggressive with the clamping force. Maybe every 6" will work. Thanks for all the help thus far! SS |
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