The discussion about sharpening taps in the "old taps and dies, worth
anything?" thread brings to mind a question of mine.

I've got a couple of old planetary style pencil sharpeners which tend
to chew up pencils and leave the wood all rough. I'm wondering if this
is a case of the blades needing sharpening or something else.

I know how to take the sharpeners apart, but I don't know how I'd go
about sharpening the many small curved blades on the cylinders.

Suggestions?

Elijah
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mostly sharpens pencils with a utility knife these days