To use the Lansky the process is simple clamp the blade into the clamp then scrub the blade against the stone with a consistent angle until you feel a burr (a thin raised seam) along the edge. The burr is your cue to flip the blade over and do the other side. When you get burr on the other side, move onto the next stone. By the time you get to the final fine grade polishing stone and get burr on the last side, then flip and give slight touch with the stone on the other side (to remove the burr but not raise another one) and you'll find your knife is literally shaving sharp (will cut the hairs off your arm).
Is Lansky the perfect sharpening system? For medium and small knives it probably is. Knives over 6"-7" long, however, require you to sharpen 1/2 the knife and then move the clamp and sharpen the other half because the edge angle changes too much if you attempt to sharpen too far from the guide hole. The stones themselves are pretty small (about as wide as your middle finger and as long as your hand) so it can take a long time to do a big knife. I can do a 5" utility knife in about 5-10 minutes, but an 8" Chef's knife can take more than double that which starts to become a bit of a big project. If you do a lot of big knives you'll probably want to spring for an Edge Pro Apex (same mechanical concept, bigger size for much much more money). If you only periodically sharpen then this can be lived with. You shouldn't sharpen your knives more than once or twice a year (or they wear out too quickly) since sharpening removes metal. You should use a honing steel frequently in between sharpenings to keep your knives sharp.
Lansky's system is the best way for normal regular people (non fanatics) to sharpen their knives. It's pretty easy, fun, satisfying, and extremely effective. It's a little work to sharpen knives; not really sure if the electric one would have done the same.
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