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I didn't delve very deeply into this article, as I don't need a dovetai jig, so I don't know just how useful it will be for making your own dovetail jig. So, you're on your own.
JOAT You only need two tools: WD-40, and duct tape. If it doesn't move and it should, use WD-40. If it moves and shouldn't, use the tape.