Create Perfect Double Tenons with a Router
Simple template offers accuracy and repeatability

Synopsis: One of the challenges of double-tenon joinery is the many steps involved. Sizing the tenons for a snug fit, spacing them evenly, and keeping multiple parts consistent can be tricky and time-consuming. To simplify the job and keep all the parts uniform, Mike Korsak devised a special router template, milling a series of strips to fit the mortises and the spaces between them, and then laminating the strips to form the template.

On a recent chest of drawers with very long drawer dividers, I used double tenons to join the dividers to the legs for extra strength. One of the challenges of cutting double tenons is dialing in the multiple setups. The tenons must not only fit their respective mortises snugly but also be spaced apart just the right amount.…
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