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Professional Knife Sharpening

Treat Your Knife To The Ultimate Edge

Professional Knife Sharpening 

Now you can treat you knives to professional knife sharpening in Shrewsbury, and it’s available by post too, right through the UK.
There’s no point in a blunt knife; sharpness is the reason for the blade’s very being. Professional knife sharpeners, Certified Sharpeners, have the know-how to produce that ultra edge and replicate it with extreme accuracy on almost any blade, producing a product that usually outperforms the ex-factory product.
A good knife is a good tool; a good knife that’s sharp is an excellent tool, producing paramount results with minimal effort.

Sharpening Chef’s Knives 

King of the professional chef’s tools is the knife. Costing considerable amounts of money and very much cared for by their owners, they need to be sharpened by equally dedicated and qualified professional sharpeners.
We are often asked which knives we recommend, and it’s products not from overseas as you might have assumed but from a very long-established British maker from Sheffield, the place stainless steel was invented, and they’re called Samuel Staniforth. They’ve been in business for 160 years, so we can be sure they really know what they’re doing with knives and steel.

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Single Sided Craft Japanese Santoku Knives

Sharpening Kitchen Knives

Domestic users may not use the quality of knives the chef uses, but many keen cooks do. However, that does not mean they have to accept second-best; the mundane knife of no repute deserves to be good and sharp. We use exactly the same processes to get the keenest practical edge.

Sharpening Other Knives 

Knives, of course, come in many shapes, sizes, and varieties of duties. That doesn’t really matter too much as most follow the came principle. Some are flexible, some stout, some pointy, some straight. It matters not; the same principles apply, and the outcome is a sharpened blade, and we can sharpen those herb knives (Mezzaluna) that need a keen edge to be effective.

Our Sharpening Process

Repairs and Preparation

The first thing we do is inspect the blade; it’s rare for them to be perfect. All we see are, of course, blunt, but they may be nicked, torn, or be damaged in some other way, a broken tip or bellied blade. We pre-grind almost every knife in a machine that gets the blade smooth, with no nicks and is equally bevelled to an angle of around 15°. This is done dry but using a special abrasive, CBN or Cubic Boron Nitride; this has the unusual characteristic of producing very little heat in the process of material removal, so the hardening of the knife is undamaged.

CATRASHARP


The Wet Grind

We use a dedicated machine from Sweden called the Tormek T8 to finish grind knives. This has a water-immersed grinding wheel with various grade grits. When we grind on this, the waste metal is washed away with the water and collected by magnets, and the blade is kept literally stone cold by the water.

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The Set Up

Implementing some trigonometry is key:  known is the grinding wheel diameter, which we are about to use (250mm is the norm).
In the dedicated jig, we set the distance to the blade edge to a known amount (say 140mm). If the edge angle we need is, say, 15°, then it’s possible to  calculate the distance from the wheel to the jig rest,  setting the height of the jig rest. This way, we arrive at the grind angle spot on each and every time, irrespective of the variable blade widths we are grinding.

  • Water Cooled, Debris Flushed Away

  • Precision Angle Set Up By Trigonometry

  • Exceptional Finish On The Blade Edge

Sharpening Under Water

Our Tormek T8 grinds a new edge while underwater; zero heat is generated and passed to the blade, no loss of temper, so no damage and minimal material removed, with all the cut metal flushed away and captured by magnets.

The Hone

We use several honing techniques; the methods and materials used  are dependent on the products we are working on. Here is a polishing mop with white-grade polishing media designed for stainless steel.

The Polish

One final polish on the mop with nothing added to make for a good finish.

The Final Cut

Will the new, sharpened edge perform?  This one certainly does - all are tested like this.

Knife Edge Angle Reference | Certified Sharpeners

Knife Edge Angle Reference

Certified Sharpeners – Precision Edge Services

Common Edge Angles

Per Side (°) Inclusive (°) Typical Use / Notes
18°Ultra-keen, very fragile. Risk of chipping in VG10.
10°20°Extreme sharpness, very light prep work only.
12°24°Fine Japanese double bevels. Takamura VG10 sweet spot.
15°30°General Japanese chef’s knives – balance of sharpness/durability.
17°34°Robust single bevel (ura ~0°, bevel ~17°).
20°40°Western knives, prioritises durability.

Steel Recommendations

  • VG10: 12–15° per side recommended. 9–10° only for delicate use.
  • SG2 / R2: Can tolerate 10–12° due to higher hardness.
  • Aogami / Shirogami: 12–15° per side; reactive, so edge care is key.
  • Western stainless: 15–20° per side for durability.

Convexing the Edge

A slight arch with the power hone strengthens the apex while retaining keenness. Think of blending the shoulder into the edge rather than forming a hard V. This reduces micro‑chipping and prolongs edge stability.

© Certified Sharpeners | Professional Knife & Scissor Sharpening

Our Workshop
Our Lccation

   Address

Riddles,
Back Lane
Bomere Heath
Shropshire
SY4 3PL

   Phone

07517 434947

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