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2 stones ? HAD ? You ain't seen nuttin' yet Ed . :)

Not really Ed. It's easier to keep an edge sharp than to sharpen it when it's blunt.
Periodically doing 5 strokes on a 12 k could save you some postage :)
How often is the question I can't...

Initial cost is a thing but if you keep using a straight it's not so exe.
I thought my first strop was a big investment. $90 in 1983. I think that's about $3 per year. :)