"Dave" wrote:

Just out of interest's sake, is there much of a cost difference
sharpening spiral planer blades as compared to straight ones? And,
is
a specialty sharpening shop needed for them or can most do the job
these days?
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SFWIW, my sharpening service uses a Swiss made machine (wonder why
that doesn't surprise me?) that is software controlled.

Specific software data points for a given blade are down loaded from a
library and you are off and running.

Lew