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To
do scarfing on a table saw first you will need a 10" table
saw with at least a 2hp motor. Attach a 3/4" x 8" x
36" plywood fence to the saw fence using two "flush
mounting" bolts. Fabricate a guide using 3/4" x 2"
x 44" and 3/4" x 3" x 44" pieces for wood.
Hold guide together using a couple of screws and some glue. Fasten
guide to the piece of plywood to by scarfed. "C" clamps
work fine for this. Set the table saw blade to six degrees for
and eight to one scarf. Seven degrees will give you roughly a
seven to one ratio. Use a finger board to stabilize the sheet
as if feeds through the saw. Having a second person around to
help guide is recommended. Make a test joint first using some
scrap wood.
When
finished with the cuts, attach the two pieces of plywood together
and coat both sides of the scarf joint with 2 coats of epoxy resin.
Follow this with a layer of thickened epoxy (use col silica)
This is the most efficient method of cutting
scarfs I have found.
Jerry Mathieu
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