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Electric knife sharpeners are fast and easy to use, but don't offer the same amount of control as a manual sharpener. They have built-in guides to make the knife sharpening easier and effective, but the internal spinning wheels grind aggressively, removing more metal than a manual knife sharpener.The 130's spring guides hold angles better than the cheaper chef's choice 110's magnetic guides https://plansoutdoor.com/sharpener-for-pocket-knives/.