about Router Bits - Part 9
Sharpening Router Bits
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with all cutting tools, router bits require occasional sharpening
for optimal performance. The cutting edges of high-speed steel
and carbide-tipped bits can be easily honed in the shop by
following these tips:
NEVER touch a sharpening stone to the outside curved
or straight edge of a router bit, as this will alter the
profile of the cut and the overall diameter of the bit.
only the back (flat) edge of the bit flute by moving
it back and forth across a flat sharpening stone surface
(use appropriate lubricant)
steel bits may be sharpened with Arkansas or India stones,
while carbide-tipped or solid carbide bits will require
a diamond stone.
that become extremely dull or nicked should either be replaced
or taken to a professional sharpening service.