Originally designed to cut decorative (hearts, bears, keys) and box joints in small boxes, this jig has grown into a fully functional multi-joint unit.
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The through dovetails we cut with it needed very little fine-tuning. You get a lot of versatility with this jig by being able to add new templates from the many available. You also get a DVD to help guide you. Two downsides: You have to buy the optional half-blind (for the pins) and through templates, and those limit you to 3/8"-thick stock.