Sharpening Procedures

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We can understand you might be a bit nervous about trusting your blades to us.

See the equipment we use, and sharpening procedures we follow for knives like yours - we illustrated our sharpening process for most types of blades.

We sharpen with jigs that adjust to blade thickness and set symmetric bevels, and maintain persistent edge angle, controlled with a laser protractor in the process of sharpening. You can specify any edge angle for your blade.
Though a BESS calibrated edge sharpness tester is a great tool to determine the degree of sharpness, by itself it is not sufficient to verify quality of the whole edge as it samples only one point on the edge, even when you take a couple of measurements at its different portions.
At Knife Grinders we check edge by two devices used together: a BESS PT50 edge sharpness tester plus Razor-Edge edge tester.
While the BESS sharpness tester is spot sampling, the Razor-Edge edge tester checks condition along the length of the edge, and used together, they give pretty comprehensive idea of the whole edge quality, and this tandem is our QA method at the end of each sharpening session.

See to yourself, we withhold no information about our sharpening routines.

Carbon steels >

Stainless mainstream (e.g. kitchen & butcher knife)

High-end and tool steels

Ceramic

Folding knife
Japanese single-bevel

Cleaver

Convex blade

Concave & Recurve blade

Straight edge, sheepsfoot

Serrated knife

Scissors

Hatchet, tomahawk & axe

Carbon steels

Measure the existing edge angle with a laser protractor, if ordered to reproduce.

(Our default is 20 degrees included for quality knives and 24 degrees for mainstream, but you can specify any edge angle.)

Clamp in a jig matching the blade thickness.

Set the grinding angle using our computer software.

Shape the bevel on an Aluminium Oxide wheel SG-250, grit 220.

With the help of computer applet calculate the Universal Support height for the next grinding wheel.
Sharpen on a 10” Japanese wheel, grit 1200 (JIS 800).

With the help of computer applet calculate the Universal Support height for the next grinding wheel.
Continue to controlled-angle honing on a 10” Japanese wheel, grit JIS 4000 (Matsunaga) or 5000 (SJ-250).

Finish with controlled-angle honing on a 10” paper wheel with Chromium Oxide.

Test sharpness.

Measure the existing edge angle with a laser protractor, if ordered to reproduce.
Clamp in a jig matching the blade thickness. Read more>>
Set the grinding angle using computer software. Read more>>	Jig-Support-Wheel relations are calculated by computer scripts, and the grinding angle is set with 0.1 degree accuracy.
Shape the bevel on an Aluminium Oxide wheel SG-250, grit 220.
With the help of the computer applet calculate the Universal Support height for the next grinding wheel. Sharpen on a 10” Japanese wheel, grit 1200 (JIS 800).
With the help of the computer applet calculate the Universal Support height for the next grinding wheel. Continue to controlled-angle honing on a 10” Japanese wheel, grit JIS 4000 (Matsunaga) or 5000 (SJ-250).
Finish with controlled-angle honing on a 10” paper wheel with Chromium Oxide. Read more>>
Test sharpness. Read more>>