Meet the crew
Larry, Zac and Grant Build a Boat
Count your fingers before and
after using this device, esp.
if work is held without clamps.
A simple "sled" for scarphing gunwales (2/29/08)
The pine "stop" comes in lengths of 7 ft. If we make the boat 14 ft. in length (we did), the wood strips that define and reinforce the gunwales will be longer than 14 ft. To satisfy this length, we'll need two scarph joints on each side of the boat. The scarphs will be 8 to 1, cut on a table saw as shown below. The "sled" is made from a piece of scrap 1/2" plywood that had been a sign. A piece of 2 x 4 was ripped to the 8 to 1 slope, then screwed to the plywood. (By the end of the project, we were using this handy device without the need for clamps. But it would be good idea for beginners to count their fingers after each cut.)
The red arrow points to the wood "rail" that fits in the saw's table and lets the "sled" carry the gunwale strips into the blade.
The waste piece shows the square, clean end of the scarf cut made using this simple device.
Joints were made using Gorilla Glue on some joints, Titebond Waterproof on others. Both glues seem to make strong joints. (We ended up using Titebond on most of the joints, making sure the entire mating surfaces were covered with glue before clamping. By the way, to make some very handy sanding blocks, glue some 50 or 60 grit sanddpaper to pieces of 1/2 inch or 3/4 inch plywood. Cut the plywood to exactly the same size as a 1/3 sheet of sandpaper and glue the paper to both sides of the ply. Hint: spread Titebond to both mating surfaces and leave the joints "open" until the glue loses its shine. Then CAREFULLY position the paper on the ply and weight the joints over night. Use wax paper between each block if you stack assembies.)
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