Question:
I have a carbide router bit that is in need of sharpening. Can it
be saved or do I need to buy a new bit?
Answer:
As long as the bit is not excessively dull or nicked you can sharpen
it yourself. Excessive wear or damage to the bit's carbide cutters
will require professional servicing. Professional sharpening usually
costs less than $10 depending on the bit.
Before sharpening check to make sure the bit is actually dull and
not just in need of a cleaning. Cleaning the
pitch and resin off your bit may solve the problem and it's the first
step in the sharpening process. You can clean the bit with a solvent
like WD-40, paint thinner, or denatured alcohol.
To test the bit's sharpness, carefully scrape the cutting edge gently across
your fingernail (Caution!). The blade is sharp if it scrapes off a little surface
of the nail.
If the bit is in need of sharpening you will need a diamond paddle
honing stone and water. Four to six passes of the carbide cutter (not
the body of the bit) should be enough. A 600 grit paddle is all that
is
needed for a light touch up. More aggressive sharpening jobs will
require a preliminary sharpening with a 325 grit paddle followed by
600 grit.
Diamond sharpening paddles are available in
our online store.
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