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The $20 Knife Sharpener That Revived My Dull Knives in Seconds (And Still Works After 9 Months)

Byaloef9898

kitchenstarterguide.com

My $200 chef’s knife used to slice tomatoes like butter. Two years later it squished them like a spoon. I tried whetstones (too intimidating), honing steels (did nothing), and even professional sharpening ($30 + shipping). Nothing stuck. Then I grabbed the current #1 best-selling manual knife sharpener on Amazon – the Longzon 4-in-1. One quick session and my knives were razor-sharp again. Nine months later they still are, and I’ve sharpened the whole block dozens of times.

The Sharpener That Actually Works (And Won’t Break the Bank): Longzon 4-in-1 Knife Sharpener with Cut-Resistant Glove

Current Amazon price (Dec 14, 2025 – Midwest Prime): $20.99 (coupon usually drops to $9.99) → Find here on Amazon

It’s the current #1 bestseller in knife sharpeners with over 85,000 reviews averaging 4.6 stars. It comes with a cut-resistant glove for safety.

Real 4-stage system that restores edges fast:

  • Slot 1: Diamond rod – repairs chipped/damaged blades
  • Slot 2: Tungsten steel – coarse sharpening
  • Slot 3: Fine ceramic – honing/polishing
  • Slot 4: Scissor sharpener
  • Ergonomic handle + non-slip base

My 9-month sharpening log:

  • Day 1: 8 pulls per side on my dull Wüsthof – sliced paper effortlessly.
  • Week 2: Sharpened paring knife, santoku, bread knife – all like new.
  • Month 3: Used the scissor slot on kitchen shears – cut paper smooth again.
  • Month 6: Dropped it on tile – no damage.
  • Month 9 (now): Just sharpened after heavy holiday prep. Still perfect.

Cons:

  • Manual (takes 30–60 seconds per knife)
  • Not for super fancy 15° Japanese blades (great for 20° Western knives)

The Sharpeners I Tried and Returned

  • #1: Longzon 4-in-1 – $20 – 4 stages + glove – 4.6★ / 85k+ → Find here on Amazon
  • #2: Kitchellence 3-Stage – $16 – Similar design – Slightly less stable – 4.6★ / 70k → Find here on Amazon
  • #3: Chef’sChoice Electric – $159 – Fast but overkill – 4.7★ / 40k → Find here on Amazon
  • #4: Some $12 generic – $12 – Broke week 1 – 3.8★ / 25k → Avoid
  • #5: Whetstone kit – $59 – Too complicated – 4.5★ / 30k → Avoid

Final Verdict

If your knives are dull and you want them sharp again without fancy tools: Buy the Longzon 4-in-1 sharpener right now → Find here on Amazon

$18. Seconds per knife. My blades stay sharp for months. Best budget kitchen upgrade ever.

Disclosure: This site contains affiliate links. If you buy through one, I may earn a commission at no extra cost to you. As an Amazon Associate I earn from qualifying purchases. All opinions are 100% my own.

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