Surfacing rough sawn slabs with a router requires a cutter that delivers a smooth, flat cut over a wide area. That cutter also has to deal with crazy grain switches and wide variations in depth of cut. The Ultra∙Shear Carbide Insert Slab Flattening Spoilboard Bit uses three nano-grain carbide inserts mounted in a precision-turned solid steel body to deliver exceptionally smooth cuts a full 2” wide with each pass on your slabs. And when the edges finally wear, just turn the inserts to a fresh edge and get right back to work. Each insert is sharpened on 4 edges. When you've gone through all 4, just buy a new set of inserts and you’re ready to go. The body will last forever.
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Replaceable carbide inserts originated in metal working. Woodworkers first embraced them in turning tools, and now more and more are showing up in router bits. The insert in the Ultra∙Shear Slab Flattening Bit has a 2" radius crown on each edge. The inserts mount to the body at an angle that puts the outside corner tangent to the cutting plane. This results in a shear-cutting action that delivers clean cuts in even the craziest grain patterns.
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