Forget these sharpening hacks and buy a whetstone.
You can find a lot of good advice on the internet. You can also find some pretty stupid advice.
I'm not sure who came up with these knife-sharpening hacks, but they obviously didn't know what they were doing.
All these hacks are good for is ruining a good knife.
Okay, if you're on a budget and can't afford a nice diamond whetstone, you can still get a decent sharpening stone for less than $10 and it'll do a lot less damage to your knife than any of these hair-brained hacks.
Personally, I prefer to avoid mechanized contraptions for sharpening. They can have a tendency to sharpen unevenly if you aren't careful.
The best method for sharpening your knife, in my opinion, is to get a good whetstone and take nice even strokes on each side. You can use a bit of honing oil if you like, but I find a bit of water works just as well.
Make sure to hold your knife at a good angle and slowly run the blade the length of the stone. Use the same number of strokes on each side.
With a little patience and some practice, you can get your knife sharp enough to shave with. Although, I still prefer an actual razor.
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