The argument for not using electric sharpeners is that they (1) cut down the lifetime of your knife substantially and (2) they do a mediocre job of sharpening.
Mechanically, it's just high-abrasive motorized spinning discs at preset angles. So rather than getting a good edge by taking a few microns of material off by doing it manually, you get an OK edge by taking 0.2mm off at a time. (If 0.2mm doesn't sound like a lot, think about how many mm wide your knife is.)
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I'm personally 50-50 on this advice: most people don't sharpen their knives at all, and I think people are better off getting 10 OK years out of a knife than 50 terrible years out of it.
alt Hacker News
The argument for not using electric sharpeners is that they (1) cut down the lifetime of your knife substantially and (2) they do a mediocre job of sharpening.
Mechanically, it's just high-abrasive motorized spinning discs at preset angles. So rather than getting a good edge by taking a few microns of material off by doing it manually, you get an OK edge by taking 0.2mm off at a time. (If 0.2mm doesn't sound like a lot, think about how many mm wide your knife is.)
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I'm personally 50-50 on this advice: most people don't sharpen their knives at all, and I think people are better off getting 10 OK years out of a knife than 50 terrible years out of it.
I'm also not willing to learn how to use a whetstone, so I landed in the middle on this: https://worksharptools.com/products/precision-adjust-knife-s...