DMT · Diamond Sharpener · Whetstone Series
DMT Diamond Whetstone 70 mm 3-Piece Set
3 Mini Diamond Whetstones with Interrupted Diamond Surface
Monocrystalline diamond in 3 grits (coarse, fine, extra-fine) – 70 × 25 × 5 mm – only ~70 g – Made in USA
Compact, grippable and featherlight – the 3-step sharpening system for your pocket
The DMT Diamond Whetstone 70 mm 3-Piece Set offers three mini diamond whetstones with proven DMT technology in an ultra-compact format. Each stone measures just 70 × 25 × 5 mm, and all three together weigh only about 70 g. The polycarbonate base provides a secure grip, while the interrupted diamond surface on a perforated stainless steel plate captures metal filings and accelerates the sharpening process.
DMT · Interrupted Diamond Surface
Interrupted diamond pattern – swarf capture for clean sharpening
The distinctive interrupted diamond surface (“polka-dot” pattern) is the hallmark of the DMT Whetstone series. The tiny holes in the perforated stainless steel plate capture metal filings (swarf) and prevent them from building up between blade and diamond. The result: a consistent sharpening action without clogging and constant performance over the entire lifespan.
Three grits for a complete sharpening system
The coarse grit (45 µm / 325 mesh, blue) is ideal for restoring heavily worn edges and shaping new blade profiles. The fine grit (25 µm / 600 mesh, red) refines the edge and removes grinding marks. The extra-fine grit (9 µm / 1,200 mesh, green) gives the edge a mirror-smooth finish. From repair grinding to polishing – this set covers it all.
Whetstone format – grippable and handy
Unlike wafer-thin credit card sharpeners, the 5 mm thick whetstones feature a grippable polycarbonate base that sits securely in the hand. The handy 70 × 25 mm format is large enough for precise work yet small enough to fit in any pocket. At only ~70 g for all three stones, you will barely notice the set in your pack.
Made in USA – DMT quality since 1976
DMT (Diamond Machining Technology) has been manufacturing diamond sharpening products in the USA since 1976. The nickel-bonded monocrystalline diamond surfaces on perforated stainless steel are a DMT trademark. Every whetstone set is produced under strict quality controls and shipped with a lifetime warranty.
Key Features – DMT Diamond Whetstone 70mm 3er-Set
- 💎 Monocrystalline diamond – nickel-bonded for durability
- 📐 3 grits: Coarse (325), Fine (600), Extra-Fine (1,200)
- 📏 70 × 25 × 5 mm – compact whetstone format
- ⚖️ Only ~70 g for the complete 3-piece set
- 🧲 Interrupted diamond surface for swarf capture
- 💧 No oil required – use dry or with water
- 🎨 Colour-coded: Blue (coarse), Red (fine), Green (extra-fine)
- 🧱 Polycarbonate base – grippable and shatter-resistant
- 🇺🇸 Manufactured in the USA by DMT
- 🏆 Lifetime warranty from DMT
Who is the DMT Diamond Whetstone Set for?
The DMT Diamond Whetstone 70 mm Set is ideal for anyone seeking a grippable, ultra-lightweight diamond sharpener for the trail – whether hiking, hunting, fishing or in the workshop.
Technical Specifications – DMT Diamond Whetstone 70mm 3er-Set
| Model | DMT Diamond Whetstone 70 mm Set (W7EFC) |
|---|---|
| Diamond type | Monocrystalline diamond, nickel-bonded |
| Grit Coarse | 45 µm / 325 mesh (Blue) |
| Grit Fine | 25 µm / 600 mesh (Red) |
| Grit Extra-Fine | 9 µm / 1,200 mesh (Green) |
| Stone dimensions | 70 × 25 × 5 mm |
| Weight (set) | ~70 g (3 stones) |
| Plate material | Perforated stainless steel |
| Base material | Polycarbonate |
| Surface | Interrupted diamond surface (“polka-dot”) |
| Lubrication | None required (dry or water) |
| Made in | USA |
| Warranty | Lifetime (DMT) |
Package Contents – DMT Diamond Whetstone 70mm 3er-Set
- 💎 DMT Whetstone Coarse 45 µm / 325 mesh (blue), 70 × 25 × 5 mm
- 💎 DMT Whetstone Fine 25 µm / 600 mesh (red), 70 × 25 × 5 mm
- 💎 DMT Whetstone Extra-Fine 9 µm / 1,200 mesh (green), 70 × 25 × 5 mm
Frequently Asked Questions – DMT Diamond Whetstone 70mm 3er-Set
What is the interrupted diamond surface?
The interrupted diamond surface (“polka-dot” pattern) consists of diamond islands on a perforated stainless steel plate. The holes capture metal filings and prevent clogging during sharpening.
What grits are included in the set?
Three: Coarse (45 µm / 325 mesh, blue), Fine (25 µm / 600 mesh, red) and Extra-Fine (9 µm / 1,200 mesh, green).
Do I need oil for sharpening?
No, the DMT Whetstones can be used dry or with a little water. Oil is not required.
How heavy is the complete set?
The entire set weighs only about 70 g – barely noticeable in your pocket or backpack.
What can I sharpen with the whetstones?
Knives, pocket knives, scissors, chisels, plane irons, fish hooks and all other cutting tools made from steel, ceramic or carbide.
What is the difference between the whetstones and Dia-Sharp cards?
The whetstones are 5 mm thick with a grippable polycarbonate base and feature an interrupted diamond surface for swarf capture. The Dia-Sharp cards are only 1.27 mm thin with a continuous diamond surface on rigid steel.
How do I care for the diamond surface?
Simply clean with water and a little washing-up liquid. Clear the holes in the pattern with a soft brush to remove filings and let dry.
Are the whetstones manufactured in the USA?
Yes, all DMT Diamond Whetstone products are made in the USA and undergo strict quality controls.
