Cubikook CS-T01 3-Stage vs. Longzon 4-Stage Manual Sharpener Side-by-Side Comparison
Cubikook CS-T01 vs. Longzon 4-stage manual sharpener comparison: How they measure up in effectiveness, ease of use, and design.

Specifications
Design
The Cubikook is heavily function-oriented — it skips the bells and whistles and focuses on keeping the device sturdy, stable, and effective to use.
The Longzon looks identical to the Mueller handheld sharpener and has a much better build and design than its affordable price suggests. There’s no shoddy parts or gimmicky details — everything fits together securely and seamlessly to serve its purpose.
We also like the device’s substantial size which allows for easy sharpening of larger kitchen knives. The inclusion of the gloves is nice, though we didn’t feel the need to use them.
Usability
The Cubikook has a straightforward design with a flat base, a sturdy working section, and an intuitive slot arrangement. Everything supports a safe and easy sharpening experience. It’s the best handheld sharpener for those with weak or shaky hands.
The Longzon is straightforward, and there are visual cues on the device if you’re not sure how to use it at first glance. Its large grip and wide working section make sharpening natural and effortless. Though we think a more modest height would make it safer to use, its stability is well above average.
Performance
The Cubikook performed consistently well in all four categories: speed, sharpness, material retention, and edge smoothness. As pull-through sharpeners go, this one is one of the most well-rounded options.
The Longzon 4-stage knife sharpener creates one of the finest edges we’ve seen with a device of this type. Unfortunately, the edge’s functionality doesn’t match up with its aesthetics. It only became keen after more than 3 minutes of sharpening, and a prolonged sharpening time didn’t get it much further on the sharpness scale either.
Overall Scores
Pros & Cons
- Excellent stability
- Affordable price
- Consistent sharpness
- Solid and sturdy construction
- Sleek design
- Substantial, accommodative size
- Fine, smooth knife edge
- Inclusion of protective gloves
- Slot for scissors
- Small ceramic rods
- Flaky brand label
- Tall base
- Slow sharpening
- Ineffective slot layout
Conclusion
The Longzon 4-stage sharpener gave a decent performance in most of our tests, especially when it came to edge material retention and edge sharpness. However, it was mediocre in the deciding ones, such as sharpness and sharpening time. Other than that, it’s a well-made, sturdy, straightforward piece of equipment.
The Cubikook CS-T01 3-stage sharpener comes with its own flaws, namely a poorly attached brand label and a shoddily-fitted ceramic rods; yet, it found itself among the top in all parameters. With a practical design and strong construction, it offered great stability and was among the safest and easiest to sharpen with.
Behind the Comparison
Anh Ngo is a writer with 9 years experience at different media outlets, covering from public news and events to product testing and analysis. At HealthyKitchen101, she works across different departments, communicating closely with its network of writers, editors, and health, tech, and search engine experts to provide a meaningful and pleasant reading experience for visitors.
Lap is Head of the Research, Testing, and Review Team (RTR Team) at HealthyKitchen101.com, where he directs and supervises the testing of kitchen gadgets and appliances.