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The corner-rounding bit rounds an edge to a given radius. The tool is shouldered to cut a fillet if required. The cut can be used to ease edges, as a simple profile, or as a part of a complex one. Other names for this router bit are round-over, rounding over and quarter-round. If a smaller pilot bearing is used, a second shoulder can be produced, in effect making the bit a beading bit.
Rounded edges give a project a softer, smoother look. The greater the radius of the round-over, the more pronounced this effect becomes.
How to measure the radiusRounding an edge makes it more durable because it won't show dents, splinter, or lose its finish as easily as a sharp corner. Like a blade that loses its sharp edge, a rounded corner is more "friendly" to people or objects that come in contact with it.
Manufacturers classify round-over bits according to the radius they cut. So, a 3/8 inch round-over bit cuts a 3/8 inch radius, and so forth. To determine the radius of a round-over bit, measure either of the dimensions shown in the drawing.
NOTE: This router bit has a 12,7 mm shank (shaft) that will fit most large routers. Please ensure that you select a router bit with a shank (shaft) size that will fit into your router collet.
Specifications
Part No: KP1210
Shank diameter: 1/2 inch (12.70 mm)
Cutting width: 1 1/2 inch (38.10 mm)
Cutting Height: 3/4 inch (19.05 mm)
Radius (r): 1/2 inch (12.7 mm)
Length of Shank: 38 mm
Replacement bearing part number: KP100 1-2
