I searched my local Craigslist for sharpening devices, and saw something I never saw before. Consulting Ebay, I determined it is a Wusthof 2900. Has anyone ever used one? I realize there are better devices, but I think this is pretty, at a minimal cost, and unique. I'm a little interested, but if it's really useless, I would forgo it. (If you want to see the original Craigslist ad, search Minnesota, then Minneapolis, for "wustof." Yes, that's the way the seller spelled it.) Thanks.
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Antique sharpening device: useful, worth anything?
- Thread starter Knyfe
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Looks like hand sharpening on a stone will be better.
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As a novelty or collectible, maybe the sharpener is of interest for the money. But otherwise, it looks like any other pull-through sharpener with ceramic, carbide or maybe diamond wheel inserts, these types of which have been marketed for decades, even to this day. Nothing special for sharpening, as compared to sharpening on stones. Depending upon what the abrasive wheels are made of, it might be either minimally useful, or more harmful than good for the sake of a knife edge's longevity.
The universal limitation with pull-through sharpeners is the way they're designed to be used, which leaves grind lines parallel to the edge. That can leave sharpened edges weaker and prone to folding over very quickly. Some are less damaging than others and basically functional in the simplest sense, with simple abrasive wheels of ceramic or maybe diamond, either with flat or rounded contact surfaces against the blade's edge. But others with hard-edged carbide scraper inserts, oriented like the crossed blades of scissors, can be very damaging to a thin edge on a blade, literally tearing the steel as the blade is pulled through.
The universal limitation with pull-through sharpeners is the way they're designed to be used, which leaves grind lines parallel to the edge. That can leave sharpened edges weaker and prone to folding over very quickly. Some are less damaging than others and basically functional in the simplest sense, with simple abrasive wheels of ceramic or maybe diamond, either with flat or rounded contact surfaces against the blade's edge. But others with hard-edged carbide scraper inserts, oriented like the crossed blades of scissors, can be very damaging to a thin edge on a blade, literally tearing the steel as the blade is pulled through.
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