Woodworker's Journal 2009-33-3, страница 38

Use biscuits and glue to assemble the router lift frame. Notice that the top piece of the frame is actually the rear router mounting block.

Drill l/4"-deep counterbores in the tabletop to recess the heads of the carriage bolts (pieces 17) that will attach the mounting blocks. Bolt the router in place, and use a 1/4" straight bit to plunge a hole through the table. Il marks the cenlerpoinl of your bits.

Assembling the Router Lift

My router lilt's open framework uses the rear mounting block as its lop piece. Il has a round crank that turns a threaded rod through a nut captured between (he lift's base and bracket. The rod pushes against a small lift plate lo move the router. Begin building the lift frame by cutting pieces 3,4, 5, 6 and 10 to size and shape.

Align the lift bracket flush with one end of the lift base, and mark the centerpoint of these parts. Use a drill press to bore a 5/8"-diameter hole through both workpieces at their centerpoinls lo lit the threaded rod (piece 8). Drill a 5/8" centered hole through the round crank, too. Then switch lo a l"-diameter Forstner bit to drill a counter-bore into the inside face of the lift bracket. Its depth should match the thickness of the captured nut (piece 9). Tap the nut into this counterbore.

Biscuit and glue the mounting block, lift sides and base together lo form the lift framework. Orient the mounting block so the slotted side faces out. Next, bore a 5/16"-diameter hole through the center of your crank knob (piece 7) and another hole through the round crank, 3/4" in from its edge. Assemble the knob and crank with a 5/16" x 2V2" carriage bolt and a pair of nuts lightened together. Use the remaining two big nuts lo attach the crank to the end of the threaded rod. Wind the rod through the captured nut and lit it into the lift base hole. Fasten the lift bracket to the base with glue and screws.

The motor cap on my Festool router has four deep machine screw holes molded into the top. In order to prevent the router lift plate (piece 10) from spinning around when I turn the lift crank, I drove four wood screws partially into the plate, aligning (heir heads with the hole pattern 011 the motor cap. That way. the protruding screw heads engage the router without

Thread the crank assembly through the captured nut in the lift bracket, fit the rod through the lift base hole, and screw these parts together.

The author uses short wood screws, nested in the holes of his router's motor cap, to keep the router lift plate from spinning when cranking it up and down. Here, he's marking the screw positions on the lift plate.

The router lift attaches to the table using the same carriage bolt as the rear mounting block. Tighten the wingnut to secure the lift, then crank the threaded rod until it seats against the router lift plate.

Woodworker's Journal June 2009

37