Rolling Knife Sharpener: Two Sharpening Angles and a Magnetic Holder

A rolling knife sharpener lets you sharpen at an angle of 15° or 20° and comes with 400- and 1,000-grit sharpening stones. A magnetic holder keeps the knife in position, while silicone feet help keep the sharpener stable on the work surface.

When to choose 15° or 20°

A 15° angle produces a finer edge and may suit kitchen knives used for precise slicing. A 20° angle leaves more material behind the edge, which can help it withstand everyday use, although the resulting edge may not be as fine.

The right angle depends on the knife, its material and the manufacturer's recommendations. Where possible, follow the edge's original angle. Changing the angle may require removing more material.

400 grit for repairs, 1,000 grit for sharpening

The 400-grit stone is coarser and is suited to restoring a noticeably dull edge or making minor repairs. The 1,000-grit stone is for finer sharpening and smoothing the edge.

For a very dull knife, you can start with the coarser stone and then move to the finer one. If the knife only needs routine sharpening, try the 1,000-grit stone first. The coarser stone removes more material, so it need not be used every time.

Construction and safe handling

The sharpener is made from rubberwood. The magnetic holder helps keep the knife in the selected position, while non-slip silicone feet limit movement on the work surface. These features make the sharpener easier to use, but they do not eliminate the risk of slipping or cuts.

Before sharpening, place the sharpener on a firm, level surface and check that the knife is held securely by the magnetic holder. The holder may not be suitable for every blade material; if the knife does not stay stable, do not sharpen it this way.

Keep your fingers away from the edge, avoid excessive pressure on the sharpening tool, and watch the position of both the knife and the sharpener. Follow the manufacturer's instructions. After sharpening, clean any sharpening residue from the knife.

What the ratings say

The available figures cite more than 2,000 reviews with an average rating of 4.6 out of 5, including 42 reviews from Slovakia. The figures are undated and may not reflect the current totals. User ratings alone do not establish the sharpener's effectiveness or safety.