Diamond Machining Technology Diafold 2-Sided Portable Diamond
Diamond Machining Technology Diafold 2-Sided Portable Diamond
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In this review the Diafold 2-Sided Portable Diamond Sharpening Stone is assessed as a compact, travel-ready sharpener that delivers the fastest edge restoration of any bonded diamond abrasive in a small package. It is aimed at home cooks, field users and tool owners who need a reliable, portable diamond sharpener that produces a polished, razor edge without oil. The single biggest reason to buy is speed: DMT's monocrystalline diamond surfaces remove metal and refine edges far faster than conventional stones while folding handles protect the stone in transit.
Key Features
- Two-sided sharpening: Two different diamond grits on 4 by 1 in surfaces provide both restoration and final polish in one compact tool, so you can fix a dull edge and refine it without swapping stones.
- Extra fine polishing: The extra extra fine face (3 micron / 8000 mesh) gives a highly polished, mirror-like edge suitable for kitchen knives and finishing blades.
- Faster cutting action: The monocrystalline diamond surface abrades metal quickly so you spend less time sharpening than with conventional whetstones or ceramic stones.
- Fold & go protection: Folding plastic handles enclose the whetstone surfaces when not in use to protect the diamond coating and make the unit easy to carry in a pack or toolbox.
- Low maintenance: No oil is required - the stone works dry or with water for simple cleanup and ready use wherever you are.
Who It's For
The Diafold is ideal for cooks, campers and hand tool users who value a compact field-ready sharpener that fits in a kit or backpack and produces a refined edge quickly. It suits people who already know basic sharpening angles and want a fast, repeatable diamond surface rather than a large bench stone.
Those who should look elsewhere include users who prefer a full-size bench stone for large blades or who expect indefinite lifetime performance without any visible wear to the diamond coating; heavy industrial sharpening demands may be better served by larger, professional bench stones.
Pros & Cons
Pros
- Very fast cutting and edge refinement thanks to the monocrystalline diamond surfaces.
- Compact, lightweight design with folding handles that protect the whetstone when stowed.
- No oil required; usable dry or with water for easy maintenance and travel use.
Cons
- The diamond coating can show wear with heavy or prolonged use, so it may not last as long as larger, industrial diamond systems.
Specifications
| Brand | DMT (Diamond Machining Technology) |
| Stone faces | Two-sided diamond whetstone, 4 in by 1 in each |
| Grits | Extra fine 25 micron / 600 mesh and extra extra fine 3 micron / 8000 mesh |
| Use | Knives, chisels and hand tools |
| Maintenance | No oil required; sharpen dry or with water |
| Portability | Folding plastic handles enclose stone for transport |
Our Verdict
The Diafold 2-Sided Portable Diamond Sharpening Stone is a smart buy for anyone who needs a compact sharpening solution that restores and polishes edges quickly. It combines DMT's fast-cutting monocrystalline diamonds with convenient folding handles for travel and kitchen use, offering strong value for domestic and field sharpening even though the diamond face will show wear with heavy long-term use.
Frequently Asked Questions
Can I use oil with this stone?
No. The stone is designed to work dry or with water; oil is not required and is not recommended.
What kinds of blades will it sharpen?
The Diafold is suitable for kitchen knives, chisels and most hand tools that require a refined edge; it is not intended as a replacement for large bench systems for oversized blades.
How durable is the diamond surface?
The monocrystalline diamond surface sharpens quickly and reliably, but customers report that the diamond coating can wear with heavy or prolonged use, so expect long life for normal consumer use but gradual wear under heavy professional use.
Editor's Take
The Diafold portable diamond sharpening stone is a compact, fast-cutting two-stage sharpener that restores and polishes edges quickly; it is great value for home cooks and field users, though the diamond face can wear with heavy long-term use.

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