Name: Naniwa Advance sharpening stone, S1-491, grain 12000
Brand: Naniwa
SKU: NASS1-491
Price: 64.99 GBP
Availability: InStock
Rating: 9 (9 reviews)

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Top-quality Japanese waterstone;
Grain size 12000;
Measurements: 210x70x10 mm.

Let us hone your decision-making skills to select the perfect sharpening tools!

Are your knives in need of sharpening?

This **Naniwa Advance Stone S1-491** is a Japanese sharpening stone with grain size 12000. This top-quality whetstone is a part of the Advance Stone collection: the successor of the Naniwa Super Stone Collection. The same quality, but with new packaging.


## Synthetic resin-bound sharpening stones

The Advance Stones are synthetic resin-bound. Naniwa takes care of the production of this binding agent themselves. Perfectly aligned to the grain size of the sharpening stone. It is one of the reasons why the Advance Stones are so incredibly good. They are hard, do not wear out easily and have a high concentration of sharpening particles. As a result your knife won’t quickly ‘bite’ into your stone and the sharpening process will go quickly. In addition, they are *splash & go*: simply add some water and you are good to go.


After sharpening it is important to properly dry off the Advance Stones and allow them to completely dry at room temperature. Do not put them on the heater! Once dry store them in a dry, dark place to prevent small cracks.


## About the grain size

Sharpening stones come in various grain sizes. The larger the number the finer the grain. The finer the grain, the sharper the results. You start the sharpening process with a coarse grain after which you continue with a finer grain. Steps of a factor two to three between the different grain sizes are perfect.


## Indication for choosing the right sharpening stone


* Grain 200 to 600: great to restore the edge of blunt knives

* Grain 800 to 1000: great to sharpen knives that are still in good shape

* Grain 2000 to 3000: for a sharper result than most knives that are delivered to your doorstep

* Grain 5000 to 12000: for razor-sharp knives




Naniwa Advance sharpening stone, S1-491, grain 12000

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Naniwa Advance sharpening stone, S1-408, grain 800

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Buena piedra para finalización de barberas, piedra de sobra conocida, muy recomendable

Funziona benissimo e per chi come me sa affilare con pietra in mano e ottima straconsigliata il prezzo e malla metà di tanto la si trova in giro , è molto veloce a lavorare 

Excellente pierre de finition pour polir et finir un tranchant rasoir 

Quite a fast honing stone for straight razors making flattening easier on Wet & Dry abrasive sanding belts (600 grit) stretched over a toughened glass placemat (30cm x 20cm x 0.4cm) on wood.

Unfortunately the stone warps which must be addressed.  I, like other owners have glued the stone to a slip of ceramic tile with epoxy marine glue to stabilize the stone and stop warping

warranty

Almost all the products we sell come with a manufacturing warranty. Want to learn more about the warranty? Read our topic: [warranty explained](/en/ct/warranty-explained.htm)

Warranty

origin

The country of origin is the country the product is produced, as far as we know. This may differ from the country where the brand itself is located.

Country of origin

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General information

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The height/thickness of a sharpening stone (excluding a potential base).

Height usable part

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We always weigh a product as bare as possible. Knives and axes always without their sheath, lights (if possible) without their battery. For knife sets we measure the entire weight. This may deviate from the manufacturer's specifications.

Weight

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Dimensions & weight

The material that gives the sharpening stone its abrasive effect. Diamond, ceramics (e.g. aluminium oxide or silicon carbide) or the materials in a natural stone. Read [more about the advantages and disadvantages of these materials](/en/ct/sharpening-stone-materials-which-are-the-best.htm).

Abrasive

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The agent that brings all the abrasive particles in a sharpening stone together. The cohesive agent usually consists of natural products, such as cellulose, wax, clay and even magnesium, or synthetic products such as: polyacrylates, polyvinyl alcohol or various synthetic resins. The cohesive agent itself usually has no abrasive effect.

Cohesive agent

Material

The grain size a supplier gives to its sharpening stones. Please note: This can be either in FEPA-F (European), ANSI (American) or JIS (Japanese). Read [more about the different grain sizes here](/en/ct/expressing-grain-sizes-sharpening-stones.htm).

Grit according to supplier

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Sharpening guides help you maintain the right angle when sharpening your knives. [Read more about using sharpening guides here](/en/ct/use-of-sharpening-guides-on-whetstones.htm).

Delivered with sharpening guides

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Some sharpening stones need to be submerged, others only need a splash of water and some need no water at all! For the best results, check in advance what is best for your sharpening stone.

Use with water

The grain size we give to a sharpening stone. We test all sharpening stones ourselves and add an appropriate grain size on the basis of this test. From extra coarse to ultra fine.

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Features & functions

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A holder/base that ensures the stone doesn't move during the sharpening process.

Reviews for Naniwa Advance sharpening stone, S1-491, grain 12000

Reviews for Naniwa Advance sharpening stone, S1-491, grain 12000

Reviews

Average rating

Reviews for Naniwa Advance sharpening stone, S1-491, grain 12000