Popular Woodworking 2001-12 № 125, страница 16

Ingenious Jigs

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You can rout multiple parts by stacking them edge to edge or face to face. However, you must be very careful that all the parts are secure under the clamping bar. If there is a slight discrepancy in the thickness of the pieces, one or more parts may shift during the cut.To prevent this,you may have to use additional clamps to secure individual pieces to the base.

To make multiple identical cuts, such as cutting the cheeks and shoulder of tenons in several rails, clamp a short fence to the base to automatically position the parts.Always check with the positioning gauge, however, before you make each cut.

If your router has a flat side to its base, keep that pressed against the fence. If the base is round, you may want to mount the router to a square sole for this operation. Router bits aren't always perfectly concentric to the sole, and the bit may move in and out slightly from the clamping bar if the router turns as you make the cut. This

does and rabbets in wide stock, it's a time-saver for making identical cuts in multiple parts. You can line up the parts under that clamping bar and cut several at once. For example, you can makes tenons in the ends of multiple door rails by cutting four identical rabbets in the end of each piece. To do this, first position two parts under the

clamping bar, one near each end. Then clamp a short fence, no taller than the stock is thick, against the ends of the parts. This will automatically position the rails for each cut you make.

Line up several rails edge to edge with the ends against the fence and lock the bar down on top of them. Check to see that each part is secure. If it shifts, you may have to add another clamp behind the clamping bar. Rout the faces of the rails, then turn them over and repeat. After routing the faces, make identical cuts in the edges. If the router seems unstable when routing the edges, either wait until you have enough parts to stack face to face to make a larger platform for the router or put spacers between the parts to spread them out. PW

Nick Engler is the author of over 50 booh on woodworking. Currently, he is heading up an effort to help kids across the United States build the ribs for a replica of the Wright Brothers 1903 Flyer in time for the centennial of the first flight in 2003. If you'd like to help, you can learn more about the project from the Wright Brothers Aeroplane Co. on the internet at www.wright-brothers.org.

will make the cut curved or wavy.

The j ig is not only useful for cutting da-

P

CENTENNIAL FLYER UPDATE

Children across America continue to V

build ribs for the 1903 Wright Flyer that will be assembled into a completed repli- sf^m ca of that historic aircraft. Nick, his wife, .

Mary Jane, and their dogs have been trav- P^r ak

eling across the country running workshops and showing off the two Wright ^Fj^yRj^^l airplanes that have already been built for the project.

In late July, Nick rolled into a Long Island Home Depot where more than 50 kids showed up to build two full-size ribs

for the 1903 flyer (which they all signed for posterity) and a quarter-sized rib for each of them to take home. In addition to learning a little woodworking, the enthusiastic crowd also got a lesson in aviation history and physics.

If you'd like more information about the Centennial Flyer Project and how you can help, visit the website at www.wright-brothers.org.

30 PopularWoodworking December 1001