The pinnacle of artificial grinding stones...
RockStar: a sharpening tool containing
the distilled essence of Shapton’s skill
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Product

information

Sharpening stone

Dimensions

  • Length:210 mm
  • Width:70 mm
  • Thickness:10 mm

Stainless-steel case

Dimensions

  • Length:236 mm
  • Width:76 mm
  • Thickness:19 mm

Lineup

Standard models

320 40 micro class / TYPE WA 60315
500 25 micro class / TYPE WA 60116
1000 11 micro class / TYPE WA 60216
2000 6 micro class / TYPE WA 60316
3000 4 micro class / TYPE WA 60416
4000 3 micro class / TYPE WA 60117
6000 2 micro class / TYPE WA 60517
8000 1 micro class / TYPE WA 60217
10000 NANO class / TYPE WA 60917
16000 NANO class / TYPE CA 60317

Models with stainless-steel cases

320 40 micro class / TYPE WA 60305
500 25 micro class / TYPE WA 60106
1000 11 micro class / TYPE WA 60206
2000 6 micro class / TYPE WA 60306
3000 4 micro class / TYPE WA 60406
4000 3 micro class / TYPE WA 60107
6000 2 micro class / TYPE WA 60507
8000 1 micro class / TYPE WA 60207
10000 NANO class / TYPE WA 60907
16000 NANO class / TYPE CA 60307

Options

...
GLASS STONE HOLDER

Heavy duty holder, made of glass and rubber. Weight approx. 2 kg.
It can also be used as a support for our GlassStone, KUROMAKU and Diamond Glass Lapping Plate products, as well as the RockStar.

Product No.:
50200
Dimensions:
259x86x56 mm
Weight:
approx. 1,960g
...
DIAMOND GLASS LAPPING PLATE

Glass lapping plate with electrodeposited diamonds.
Not only does it correct the sharpening surface to ensure it is flat, it also relieves clogging and optimizes surface roughness. ※For stones of class 25 microns or below (500 and above).

Product No.:
50100
Dimensions:
253x80x24 mm
Weight:
approx. 750g
MORE
...
GLASS STONE POND

39 x 32 cm sharpening space, made of glass and rubber.
Catches any water that drips off the stone.
Pour in some water then position the stone holder before use.

Product No.:
50000
Dimensions:
390x320x52 mm
Weight:
approx. 3,350g

FAQ

The RockStar series comprises solid 10 mm sharpening stones, available as either standard models (with no case) or together with a stainless-steel case.
The KUROMAKU series comprises solid 15 mm sharpening stones, which come with a plastic storage case.
Both series are available in ten different grit sizes, but the lineup differs.

The RockStar series comprises 10mm solid sharpening stones of a high quality equivalent to those in the GlassStone series.
The GlassStone series products feature 5 mm tempered glass laminated to 5 mm sharpening stones.*
The RockStar series has 10 different models, while the GlassStone series has a total of 17 types.
*Product no. 50106 features 5 mm tempered glass laminated to a 10 mm sharpening stone.

Alongside the stainless steel they contain rubber and magnets.

Click here to see how to open the case.

Click here for the handling precautions.

The type of stone, the country of manufacture and the lot number.

It indicates the approximate median particle diameter (size) of the abrasive material in the product, in micrometres.
When expressed in words rather than numerically, 'COARSE' represents the largest median particle size class, and 'NANO' the smallest.

It indicates the type of abrasive contained in the sharpening stone.
HA: Mono-crystalline fused alumina
PA: Pink alumina
WA: White alumina
A: Regular (brown) alumina
CA: Calcined alumina
HPA: High purity alumina

Precautions for use

Sharpening stone

To make best use of this product, immerse the whetstone in cold water for 5-6 minutes before use. This will provide a smoother sharpening feel.

Do not expose it to water for long periods of time.
After use, wipe it dry. Leaving the whetstone wet or wrapped in a wet towel could soften it and reduce its durability.
Do not leave the whetstone outdoors, or in direct sunlight.
That could lead to weathering or cracking.
Do not subject the whetstone to rapid drying.
Placing it somewhere where it is directly exposed to wind, for example near a fan, could cause cracking.
Store it at room temperature.
Leaving the whetstone outdoors in a closed car or anywhere else that might experience abnormally high temperatures could cause it to crack.
Do not expose it to hot water.
Extreme temperature differences could make the whetstone crack.
Do not clean with detergents or the like.
These materials could cause qualitative changes and impair the whetstone's sharpening capability.
Do not use a dishwasher or dryer on this product.
Sudden temperature changes could cause it to crack, and knocks could cause it to chip.

Stainless-steel case

Do not use any chlorine bleach, paint thinner, benzene, metal scouring pads, polishing powders, cleansers or the like on this product.
This is because they may cause corrosion, scratches or rusting.
Do not leave this case in contact with any other metal.
Leaving the metal parts of this case in contact with other metals such as steel or aluminium could cause rust.
Do not leave this case in contact with any salty or oily substances.
This could cause rust or staining. If salty or oily substances do come into contact with the surface of the case, rinse them off well with water, then wipe dry with a cloth to remove any moisture.
Do not subject the case to any strong impact, such as knocking or dropping it.
This could scratch it, or result in deformation.
Do not place any heavy objects on the case, or press it hard.
There is a risk this could cause deformation or other damage.

Take care not to injure your hands or fingers etc. with the edges of the case.

Life itself feels sharper with Shapton