Another technique is to use a "star" wheel. Lay the drawing over another sheet of paper and roll the wheel over it. It will put little puncture marks through the paper which can then be followed, or you can lay the punctured drawing on the wood and dust it with chalk, the chalk going through the holes. The "chalk" technique is used by sign painters when transferring a complex pattern onto a surface you don't want marred, like the name on a yacht transom, or some of the custom car paint designs. Best way to apply the chalk is to load up a cotton/muslin bag with it and then tap it against the drawing.
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