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When possible, climb-cut using a handheld router with your workpiece clamped securely to the bench, rather than attempting it on a router table. Because climb cutting—routing in the same direction as the rotation of the bit—on a router table can pull the workpiece from your grip, throwing it off the table. It also exposes your hands to the spinning bit. No matter whether a workpiece edge curves outward as with the tabletop shown previous slide or inward as on the shelf brackets, shown in photo , climb-cut troublesome areas to prevent tear-out.
Workpieces that narrow near the end as shown in photos might tear out no matter which direction you rout. To avoid tear-out, cut the piece oversize, rout the curved edge, and then rout the piece to final size. When using a template to create a workpiece, cut away the waste material as close to the cutline as possible.
Then, when you rout with a flush-trim or pattern bit, you can run the router in either direction with little chance of tear-out. With an old handscrew clamp and some scraps of hardwood, you can set up your thickness planer to Skip to main content. Avoid tear-out when routing. How to rout rounded workpieces without troublesome tear-out. Previous X of 7 View all Next.
All about tearout Few things frustrate a woodworker like painstakingly shaping a curvy workpiece, only to have a router bit tear out the grain during final machining. General rules Here are some general rules to help reduce the chances for tear-out: Use a sharp bit.
Dull bits chop at the wood rather than slice it cleanly. Maintain a wide stance feet at least shoulder-width apart to avoid being caught off-balance. Rout the easy edges first Begin by routing the edges not prone to tear-out as usual. A steady hand for climb cutting Next, climb-cut the tear-out-susceptible areas. More helpful tips When possible, climb-cut using a handheld router with your workpiece clamped securely to the bench, rather than attempting it on a router table.
Watch for tear-out prone edges Workpieces that narrow near the end as shown in photos might tear out no matter which direction you rout. Oversized pieces can minimize tear-out To avoid tear-out, cut the piece oversize, rout the curved edge, and then rout the piece to final size. Facebook Pinterest Twitter Text. Before cutting your workpiece, test the cut on scrap stock. If the bit extends too far, it will cut a slight ridge into the workpiece surface, called a fillet.
If the bit does not extend far enough, it will cut an incomplete radius. By extending the bit slightly, you can cut a round-over with a fillet like the one shown in the first drawing. Use a rule to set the fillet depth as shown in the second drawing. By changing to a smaller pilot bearing, you can make a round-over bit cut a beaded edge like the one in the drawing. To change bearings, simply loosen the setscrew atop the bearing with a hex wrench, as shown in the drawing.
A few bearings cost a lot less than dedicated beading bits! With an old handscrew clamp and some scraps of hardwood, you can set up your thickness planer to Skip to main content. Round-over bits basics. Previous X of 8 View all Next Round edges have benefits Rounded edges give a project a softer, smoother look.
Radius determines size designation Manufacturers classify round-over bits according to the radius they cut. Set up a round-over bit After mounting a round-over bit in a router, adjust the bit up or down so the bottom of the concave cutting edge aligns flush with the router base or the surface of the router table. How to add a fillet By extending the bit slightly, you can cut a round-over with a fillet like the one shown in the first drawing.
Round-over bits cut beads By changing to a smaller pilot bearing, you can make a round-over bit cut a beaded edge like the one in the drawing.
A bearing change allows for beading To change bearings, simply loosen the setscrew atop the bearing with a hex wrench, as shown in the drawing. Facebook Pinterest Twitter Text.
Read more about Routers. More Routers All Routers. Routing Ovals With an Ellipse Jig.
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