Doesn’t look like you can link directly to it, so here’s the info…
It works well. It will tell you if a blade is dull, if it’s sharp, and/or if there’s problems with the edge… a burr or wire edge will feel rough for example. It won’t really tell you levels of sharpness. A blade has to be pretty sharp to “pass” all the tests, so, for example, it should shave arm hair, but it won’t really tell “levels” of sharpness beyond that. In other words, you couldn’t use it to tell whether an edge would whittle hair, for example.
There’s actually 4 parts to the test… not just sliding it down the edge.
If you like a coarse edge, it won’t work as well… it requires a fine edge to pass all the tests. (Doesn’t have to be polished… a 1000g stone edge should pass, for example).
It’s really nice to have when you’re looking at knives in a store, and the clerk freaks out when you start strumming the edge with your fingers like a guitar. :whistle:
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