Sharpening
Freehand stone or a guided sharpening system?
Both use monocrystalline diamond and both come from the same maker, which strips the comparison down to one question: do you want to learn to hold an angle, or buy a device that holds it for you? The honest answer depends on how many knives you own and how different their grinds are.
| Compared on | Diamond 325/1200 with storage base | Angle-adjustable system, 10°–35° |
|---|---|---|
| Abrasive | Industrial monocrystalline diamond | Monocrystalline diamond |
| Grits | 325 (45 micron) and 1200 (12 micron) | 220, 325, 600 and 1000 |
| Angle control | Freehand | 10° to 35°, adjustable |
| How the angle is set | By your hands | By distance between blade and abrasive, stated |
| Substrate | 0.9 cm (0.4 in) steel base | Not published |
| Pieces | One plate plus a non-slip base | Seven, including a whetstone |
| Stated for hard materials | High-speed steel, carbide and other hard materials | Not published |
| Skill needed on day one | Considerable | Very little |
| Bulk to store | One plate | A seven-piece set |
| Listed on amazon.com | Yes | Yes |
A tick marks the better answer on that line only. Counting ticks does not decide the page — the two verdicts below do, because these products answer different questions.
Prefer the plate if you sharpen a few knives and want to learn properly. A 0.9 cm (0.4 in) steel substrate keeps it flat — which matters more than it sounds, because a bowed plate puts a curve in an edge that no technique removes — and it never needs flattening the way a water stone does.
Prefer the guided system if you own knives ground at different angles, or if you have tried freehand and given up. Publishing a 10° to 35° range is what lets one jig handle a 13° Japanese santoku and a 20° European chef’s knife without guesswork, and four diamond grits cover repair through refinement.
No — a correctly set jig produces a more consistent bevel than most hands do. What it costs is bulk, setup time, and the skill you would otherwise have acquired.
A diamond plate must stay flat. Bonded to 9 mm (0.35 in) of steel it does; on a thin substrate it can bow under pressure, and a bowed plate grinds a curve into the edge.
Yes, with either. Sharpening removes metal; honing pushes a rolled edge back into line and takes ten seconds. They are different operations and both kitchens need both.
Dual grit 325/1200 · monocrystalline diamond on a 0.9 cm (0.4 in) steel base · non-slip storage base
The top of this hub: industrial monocrystalline diamond bonded to a 9 mm (0.35 in) steel plate, in two grits, with a storage base — built to sharpen anything hard.
Best for: A workshop as much as a kitchen, and any blade a conventional stone struggles with.
≈ $70
Adjustable 10° to 35° · 7-piece set · monocrystalline diamond plates 220/325/600/1000 · whetstone included
A guided system with a genuinely adjustable angle from 10° to 35°, four diamond plates and a whetstone — the only sharpener here that can match a Japanese 15° edge.
Best for: Someone with Japanese knives who wants repeatable results without freehand practice.
≈ $180
