Rout-Slot-for-Hold-Down-Bolt Published January 3, 2013 at 395 × 284 in Making a Table Saw Adjustable Tenoning Jig Rout a 2-1/4″ long slot through the carrier plate to install the hold-down bolt with a 4/16″ diameter bit, raising the bit up about 1/8″ each pass you make.