DADO JIG, from Rockler, is a sliding sled that works to cut tailor-fit dadoes for virtually any thickness of lumber.
The jig works with a router and the separate Rockler Straight Edge Clamp System to cut precise dadoes, according to the company. Grooves on either edge of the Dado Jig fit into a corresponding groove in the Straight Edge Clamp System, meaning the jig won’t drift away from the fence and ruin the workpiece. Using a 1/2” router bit, users rout the first shoulder of the dado as usual, then flip the jig around. The offset for the second shoulder of the dado is infinitely adjustable to achieve a final width of 1/2” to 1” wide to perfectly match plywood thickness. The jig is predrilled to accept routers with a standard PC 690 3-hole pattern. Comprised of low-friction ABS, it is also simple to drill custom holes for non-standard routers. It retails for $44.99 at www.rockler.com. Tel: 877-762-5537.
This article originally appeared in the March 2013 issue.