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- Jun 4, 2010
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Perhaps a little TOO minimal then, for serious sharpening.
The very first "commercial" owner of one of my Washboards was a coworker. I walked her thru a bunch of sharpening options including a Norton econo stone, a Washboard with wet/dry and copy paper, and a coffee cup - top and bottom. Between each I dulled the edge by dragging it across a cold chisel at 90°.
The knife was Buck 420hc and it responded well - shaved arm hair after the coffee cup.
Anything with carbides or RC over mid to low 50s and you are out of luck. It (coffee cup) can do a great job!
I scrub with it just like any other stone, going very carefully at the tip. Once a new edge is established and burr free, flip the cup and 'steel' it on the glazed rim.