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Routing Direction. Now, you can start routing. Start the router at the cleat end of the jig and rout in the direction shown in the photo on the facing page. In routing this way, the rotation of the bit will pull the router against the fence. Here's a simple tip that can make routing go smoother: To prevent the power cord from getting hung up during a cut, drape the cord over your shoulder and hold it in your hand as you grip the router. Making Dadoes Wider. Most of the time, a single-width pass is all that's necessary. But there are times when I need to rout a dado that's wider than the bit diameter. technique: Custom-fit Dadoes Routing dadoes or grooves to hold a plywood panel can be a challenge. The problem is it measures a little less than the stated thickness. Whenever I need to rout a perfectly sized dado to match a piece of plywood, I turn to a pair of guides like those shown in photo at right. The guides consist of a hard-board base with a fence on top. I use the router and a V2" straight bit to trim the base of the guide. Once you've made the guides, using them is straightforward. You can use a combination square to set one of the guides square to the edge of the workpiece. Then place a plywood spacer alongside the guide and clamp the second guide against the spacer. Now, you can rout along one edge guide then turn the router around and make a return pass to complete the dado. ▲ Two Guides. Use two router guides to rout dadoes that exactly match your workpiece. FIRST: align jig - with mark farthest n from fence for first pass It's easy to do this using the jig, but you want to make the cuts in the right order. Routing the dado in the wrong order causes you to backrout. This can pull the router away from the fence and lead to a wavy, inaccurate cut. The drawings at right show the order. Start by aligning the jig with the layout line farthest from the fence. After making a pass, reposition the jig to align with the other mark. Another way to make a custom-sized dado or groove (to match the SECOND: slide jig to other mark to complete the dado thickness of a plywood panel, for example), is to use the guides shown in the box below. With either technique, you'll find that you can rout accurate dadoes and grooves in a short time. A 9 |
