Cubikook CS-T01 3-Stage vs. Mueller 4-Stage Manual Sharpener: How They Measure Up

Overall Verdict

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The Cubikook isn’t as fast as the Mueller; however, it’s the better choice if you’re about more than just speed.

We like the Mueller’s sizable and ergonomic grip and appreciate the handy scissor slot. The Cubikook sports a more pragmatic design, with a wide base and low center of gravity that ensure stability and safety.

The two sharpeners maxed at the same level of keenness—Level 8, which is the highest achieved by a pull-through sharpener to date. The Cubikook was outspeeded to the tune of 15 seconds by the Mueller in the lemon-cutting test. On the other hand, the former was friendlier to the knife, peeling off much less material and doing a better job of polishing the edge.

If you care about the longevity of your knives, the Cubikook’s gentle sharpening approach works much better.

Pros & Cons

Strong construction, pretty coloring
Quick sharpening
Scissor slot
Ease of use

Excellent stability
Affordable price
Consistent sharpness
Solid and sturdy construction

High center of gravity
Harsh on the knife edge

Small ceramic rods
Flaky brand label

Key Specs

Stages

Scissor sharpener

Yes

Abrasives

Diamond, tungsten carbide, ceramic

diamond, tungsten carbide, ceramic

Grit size

Coarse, Medium, Fine

Dimensions

L9.3 x W1.8 x H3.1 inches

L8.4 x W1.9 x H2.3 inches

Where to Buy

Price at publication

$12.35

$17.50

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Analysis and Test Results

Performance

Overall Performance Scoring

6.7

8.0

Sharpening Time to Cut a Lemon

8.8

7.6

Sharpening Time

1 minute 15 seconds

1 minutes 30 seconds

Cutting Feel

Swift and smooth

Material Retention

5.0

8.0

Medal dust on the abrasive slots of the Mueller steel knife sharpener

Medal residue on the three abrasive slots on the Cubikook knife sharpener

A bowl containing metal sharpening residue next to the Cubikook sharpener

Sharpening Time

1 minute

Maximum Sharpness Achieved

8.0

Sharpening Time

6 minutes

Sharpness Level

8 (Chicken breast with skin, 1 swipe)

Edge Smoothness

4.0

8.7

Close up view in vignette of the knife blade and knife edge after sharpening with the Mueller knife sharpener

Close up view in vignette of the knife blade and edge after sharpening with the Cubikook Chef' Sharpener

Design

Overall Design Scoring

9.1

8.5

In the Box

The Mueller 4-stage knife sharpener lying next to its package box, user guide, and promotion leaflets

The Cubikook 3-stage knife sharpener next to its package box

Dimensions

Length

9.3" (23.6 cm)

8.4" (21.3 cm)

Width

1.8" (4.6 cm)

1.9" (4.8 cm)

Height

3.1" (7.9 cm)

2.3" (5.8 cm)

Weight

8.6 oz (244 g)

7.9 oz (225 g)

Build Quality

9.1

8.8

The Mueller sharpener standing on a surface

The abrasives and part of the handle of the Cubikook CS-T01

Working Section

Top view of the abrasive slots of the Mueller handheld sharpener, with scissor slot, tungsten blades, diamond rods, and ceramic rods

The working section of the Cubikook with 3 abrasive slots on a frame and part of its base

Levels of Sharpening

Sharpen (slot 1, 2, 3), Hone (slot 4)

Coarse, Medium, Fine

Abrasive

Tungsten carbide blades, diamond rods, ceramic rods

Diamond rods, tungsten carbide blades, ceramic rods

Mechanism

Pull through

Sharpening Angle

20 degree

20 degrees

Base

Material

ABS plastic

Feet Type

Anti-slip rubber pads

silicone base

Grip

9.0

7.5

The grip of the Mueller steel knife sharpener and part of its body

The grip of the Cubikook kitchen knife sharpener

Material

ABS plastic and rubber

ABS

Usability

Overall Usability Scoring

8.2

9.4

Slot Arrangement

7.0

The working section on the Mueller handheld sharpener, with 1 slot for scissors and slots 2, 3, 4 for knives

The working section on the Cubikook, with 3 slots featuring diamond rods, tungsten carbide blades, ceramic rods

Insertion

9.0

9.5

Top view of a kitchen knife in one of the Mueller’s abrasive slots, the sharpener being held by one hand

Top view of a knife being sharpened with the Cubikook, the sharpener being held in one hand

Pulling Through

7.5

9.0

2 hands holding and sharpening a kitchen knife with the Mueller sharpener

Cubikook Knife Sharpener Pulling Through

Stability on a Clean Surface

8.5

9.5

1 hand holding a knife and sharpening it with the Mueller on a countertop, the Mueller held in another hand

2 hands holding and sharpening a kitchen knife with the Cubikook sharpener on a countertop — The Cubikook has a low height and a wide base which helps minimize the risks of flipping during sharpening.

Stability on a Wet and Dirty Surface

8.0

A kitchen knife being sharpened with the Mueller sharpener on a countertop sprinkled with salt particles

2 hands holding and sharpening a kitchen knife with the Cubikook on a salt-sprinkled countertop

Behind the Comparison

Anh NgoSenior Editorial Director

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 VoTest Lead

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.

Nguyen NtkVisual Specialist

Nguyen Ntk is a graphic designer, photographer, and videographer whose philosophy centers around respecting and celebrating the beauty of reality. Through his lenses, Nguyen strives to capture the true essence of objects and events, showcasing and highlighting authentic features without distortion or exaggeration.