What to Use to Flatten Shapton Pro Series

PRIVACY

• The stones
• The lapping plates
• Maintenance
• Miscellaneous

The stones

Practice Shapton stones need to be soaked in water before use?

No, Shapton stones practise not need to be soaked except the very showtime time after purchase. Nosotros do recommend that on first utilise, you pre-soak the stone in water for 5 to vi minutes to secure fifty-fifty smoother sharpening.

Exercise sharpening stones accept 'best earlier' dates?

No, there are no fourth dimension limits on when sharpening stones can be used.

What are the features of Shapton stones?

Shapton stones' characteristics include "High annoying & sharpening capabilities", "Ready to utilise immediately" , "Reduced wear", "Long lasting" and "No smell".

What are the features of GlassStones?

The conventional image is that sharpening stones are large and heavy, but GlassStones are not only thin and light, only also strong, as layers of tempered glass are stuck together. GlassStones therefore have strong resistance to cracking or sudden breakage acquired by external shocks such every bit being dropped.

I found some uneven colour on the surface of the stone I just bought. Is anything incorrect?

No. Information technology is in the nature of sharpening stones that spots or uneven colours announced on the rock surface. This is not a quality problem, and you tin can use the stone without business concern.

Which confront of the KUROMAKU series sharpening stones should I utilise?

You lot tin can use either confront, simply nosotros recommend that you start on the side where no messages have been printed.

Some white marble-similar patterns have appeared on the sharpening stone'south surface. Is anything wrong?

No. These white marbled patterns tin can appear on the surface of a sharpening stone under certain conditions, depending on how the stone is stored. This is not a quality problem, and you can utilise the stone without business concern.

Are there whatsoever bract materials that cannot be sharpened?

All blade materials can be sharpened except ceramics and superalloys.

The plastic case that came with the unit has cleaved. Can I buy a replacement?

Yep. KUROMAKU cases can be bought separately from the principal product.

What does "micron course" hateful?

Micron class represents the coarseness, in another word, the size of the abrasive grains in a sharpening stone. The college the number, the larger the grain size, in other words, the coarser the sharpening rock.

What does "type" hateful?

Blazon represents the blazon of abrasive independent in the stone.

What are sharpening stones made of?

Sharpening stones are made of abrasives such every bit alumina and silicon carbide, combined with binders and other compound materials.

How does 1 remove burrs?

Place the burred side of the blade against the sharpening stone, so remove the burrs by gently sliding it along, without much pressure level.

Is information technology possible to sharpen a kitchen pocketknife with a nicked edge?

If the nick is big, remove it using a coarse stone of twoscore micron and higher up (320 or beneath), then acuminate it using a succession of stones, moving from coarse to fine.

Why do I yet see scratches on the bract even though I have sharpened it with a KUROMAKU fine rock?

If you polish information technology with a finishing stone later sharpening it with a medium stone, but there is still slurry adhering to the blade or your hands, the blade may be scratched by the rough annoying agent of the medium stone. Because of this, when irresolute whetstone and moving to progressively effectively sharpening steps, information technology is important to wash off whatever clay produced in the previous step. It is non enough merely to rinse the blade and your hands: you should carefully and thoroughly wash off any films of dirt on your hands, fingernails, and the surface of the bract.

Should sharpening stones be used in a particular order?

The usual order is to start with coarser stones having larger abrasive grains, and so motility to finer stones with smaller grains.

How frequently should blades be sharpened?

That depends on the blade'due south material, purpose and frequency of apply, as well as the level of cut you are seeking.
Our recommendation is to sharpen a bract whenever you lot feel its cutting ability has declined.

What are coarse stones of 40 micron and to a higher place (320 or below) used for?

Coarse stones are designed for adding an edge or removing large nicks on an existing edge.

Do Shapton stones come with a Nagura Stone?

No. Shapton stones do not demand a Nagura Stone, and lapping with a Nagura Rock will get out the surface crude and ragged.

Is information technology OK to use oils with your sharpening stones?

Yep, it'south fine to use oil with the stones. However, one time yous've used oil on a stone, you should ever use oil with that rock.

Contempo KUROMAKU stones look dissimilar from the designs bought in the past. Is there any divergence in spec?

No. The only alter was in the printing design, not in the quality or specs of the stones.

Should the Lapping Disc be immersed in water before employ?

There is no need to immerse it in water in advance, but do wet it when using information technology.

Which of the surfaces on the Lapping Disc should I use, the apartment one or the one with grooves?

You tin can use either surface - the grooved surface will give a slightly finer issue.

How practise I employ the Lapping Disc to perform 'dressing'?

Starting time moisture the unabridged surface of the sharpening rock. Side by side, have the Lapping Disc in one hand, and dress the entire rock surface past making modest circular motions, only without applying too much force. There is no need to dress it for a long fourth dimension: but one layer of 'peel' needs to be removed for the sharpening stone to regain its original functioning.

Do I need to keep h2o running constantly while sharpening a bract?

There is no need for a steady stream of water - you lot can sharpen your blades with just a splash of water on the stone surface. Nonetheless, if you lot do let the water stream constantly, it ways your hands stay clean while sharpening.

Does a build up of slurry create whatsoever problems when sharpening?

It is fine to acuminate blades without washing away the slurry, but as Shapton sharpening stones take a high abrasive content, they can be used equally well with no slurry present.

The GlassStone series includes two types each of the 4000, 6000 and 8000 sharpening stones. What are the differences between them?

They use different abrasive agents. GlassStone serial 50603, 50703 and 50803 are recommended for sharpening composite steel blades, where steel has been forge welded with another metal.

Are any of the KUROMAKU sharpening stones recommended for normal household knives?

We recommend the Orange Medium (1000) sharpening stone and Wine Fine (5000) finishing stone. If you intend to use but one stone, we recommend the Blue Medium (1500) sharpening stone.

My sharpening stone no longer sharpens as it did when get-go bought - it slips and slides. What should I do?

It may take become clogged. We recommend that yous endeavor using a lapping plate.

When I use "KUROMAKU Purple" for sharpening, it feels wrong.

"KUROMAKU Majestic" is designed to requite an optimum, unprecedented cutting feel to the blade tip (around 1 mm), so it may feel strange if used with conventional sharpening methods.

I desire to endeavor using "KUROMAKU Majestic", but the 'Precautions' land it should be used afterward "KUROMAKU Melon" － would information technology be OK to use it for sharpening after "KUROMAKU Yellow" instead, as this is finer?

That would exist fine with high hardness steel, but for blades fabricated from softer materials, delight do use "KUROMAKU Melon". This is due to the stones' concrete characteristics.

The lapping plates

How often should I lap the surface of a sharpening stone?

We recommend that you lap it any time a blade is to be sharpened. Keeping the sharpening surface in pinnacle status helps maximize the sharpening stone's functioning.

Tin diamond sharpening stones from other suppliers be used to flatten your sharpening stones, or would this cause issues?

Nosotros accept not tested what happens when diamond sharpening stones from other suppliers are used to restore our sharpening stones. Depending on the particle size and country of the diamond sharpening stone, it might non be possible to flatten the surface properly.

Tin I use Shapton lapping plates such as KUBO, DGLP and NAORU to flatten diamond sharpening stones?

No. These lapping plates are not recommended for utilise with diamond electrodeposited sharpening stones because the surfaces can be damaged.

Is there a way to bank check whether flattening has been done correctly?

As a guide, use a pencil to draw a grid on the stone surface to be flattened.
Parts where the lines get erased evidence where the lapping plate has made contact, i.e. where flattening has been performed correctly.

I lapped the fine sharpening stone, but it no longer sharpens.

If the rock surface has been lapped roughly, you volition be unable to sharpen blades well. The sharpening rock surface needs to be lapped to a mirror end (when lapping a fine stone, employ a combination of "NAORU" with "Fine Lapping Powder", or "KUBO", or the "Diamond Glass Lapping Plate").

What is the deviation between KUBO and NAORU?

KUBO is made of bandage bronze, with diamonds electrodeposited on its lapping surfaces. Information technology has a forepart side for lapping sharpening stones, and a back surface for fixing damaged blades.
NAORU is made of ductile cast iron, and comes with lapping powders to exist sprinkled on its surface earlier apply.

What should I do if my KUBO's sharpening ability declines?

Diamonds practise get worn out over time. If the KUBO'due south functioning has declined, nosotros offer a diamond re-electrodeposition service.

I used a brand-new "KUBO" to lap a fine sharpening rock, only the stone'due south surface is however rough, not similar a mirror finish.

A brand-new "KUBO" may nonetheless accept some diamonds protruding, so information technology'southward all-time to use it start to lap some medium sharpening stones a few times.

Where can I apply for the KUBO Re-electrodeposition Service?

Please, contact the dealer where your purchased your kubo.

Can a KUBO be used to flatten sharpening stones of any grit?

KUBO can only exist used for flattening fine stones of 30 micron form or beneath (400 or higher up).

How long does KUBO Re-electrodeposition accept?

The turnaround is normally about 1-ii weeks after receipt, simply it tin can sometimes accept up to a month or so, depending on the situation.

How many times tin a Diamond Glass Lapping Plate be used?

A Diamond Drinking glass Lapping Plate is normally skillful for around 1,000 to 3,000 applications.

Can a Diamond Glass Lapping Plate be used to flatten sharpening stones of whatever grit?

DGLP can merely be used for flattening fine stones of 30 micron course or below (500 or above).

Can NAORU be used to flatten natural sharpening stones?

Aye, NAORU tin can be used to flatten natural stones too.

The lapping powders that came with NAORU have run out. Tin can I buy replacements?

Yes, the powders are available separately.

Tin I use NAORU to flatten sharpening stones of whatever grit?

You can, but make sure you use a lapping pulverisation that matches the rock's grit.

How should the NAORU be stored?

After use, use cold h2o to wash away any slurry or pulverization, then let the water drain away well before storage. Some rust may appear depending on how the product is stored, only this has no impact on usage.

I lapped the stone with "NAORU" and "Fine Lapping Pulverisation", only its surface is nonetheless crude, not like a mirror cease.

If softening of the rock has progressed beyond a certain depth, you will be unable to lap it with "Fine Lapping Powder". In such cases, first utilise "Medium Lapping Powder" to scrape away the soft parts, and so thoroughly rinse away any dirt and one time again use "Fine Lapping Powder" to finish the stone's surface.

What does "Tomozuri" mean?

Tomozuri means to rub the surfaces of two stones or plates against each other.

Can lapping be carried out by rubbing stones against each other?

Yes, it can. In such cases we recommend rubbing iii sharpening stones against each other, in turn.

Maintenance

Is it OK to soak your sharpening stones in water for a long time?

No. Don't soak our stones for more than 30 minutes, because this may cause the stone to get softer.

Is it OK to utilize hot water when sharpening?

No. Don't use hot water with our sharpening stones, considering the water will crusade extreme changes in temperature that tin can cause cracks.

Is it OK to use detergent with sharpening stones?

No. Don't use detergents with our sharpening stones, because they can cause changes in the quality of the stones.

Does leaving a sharpening stone outdoors cause whatever problems?

Leaving a sharpening stone outdoors is not advisable as this may cause information technology to deteriorate and crack. sharpening stones should be stored indoors at room temperature, away from straight sunlight.

Is it OK to dry a wet sharpening stone using a fan?

No, do non endeavour to dry out a sharpening rock rapidly by directly applying a fan or the like, as this can cause cracking.

Is it OK to make clean sharpening stones in a dishwasher?

No - neither dishwashing machines nor dish dryers should be used.

I feel a stone'due south sharpening ability has declined since I bought it. What might be wrong?

One possible cause is deformation of the surface. We recommend you flatten it, to keep the sharpening surface in prime condition.

What should I practice if a crack opens up on a sharpening stone?

Cracks tin can form when a sharpening stone is non used for some time, or if usage precautions are not observed. The main causes are sudden drying or farthermost changes in temperature.
Shave off the surface at the cracked function. Cracks get deeper as they go wider, so it is important to do this at an early phase, while the fissure is still pocket-size. If the stone is used in an extremely dry out surroundings, we recommend keeping it in a plastic pocketbook or a sealed plastic container, to prevent acute dry-out afterward utilise.

What should I practise if a sharpening stone gets clogged?

We recommend using our Lapping Disc, a dressing stone.

How should I take care of my stones afterward use?

After using a stone, wash whatever clay off with a brush or sponge. If clay is left adhering to a rock, its sharpening ability can decline.

Is it OK to employ sandpaper to flatten a sharpening stone's surface?

No, annoying paper can get out a rock clogged, with the result that the blade slips and it is impossible to sharpen it.

What should I do if the surface is no longer flat?

Sharpening stones start deforming the moment they are used to sharpen a blade. Repeated sharpening then causes the flatness of the blade to be damaged too, mirroring the plain-featured surface of the rock.
Use a lapping plate such as KUBO, DGLP or NAORU to render the surface of the sharpening stone to its flat state.

My KUROMAKU fine stone has gone soft.

If yous leave a sharpening rock immersed in water for over half an hour, or apply detergents and the like, the stone'south surface will soften, or there will be qualitative changes - this is what has happened here.
As well, if yous use a wooden sharpening base etc. of your own and this gets moisture, the fine stone may blot moisture from it and go soft.
If this happens, you will need to scrape the sharpening rock until a sharpening surface with the original hardness emerges.
In such cases, apply "Medium Lapping Powder" to scrape away the soft parts, then thoroughly rinse abroad any dirt, and use "Fine Lapping Powder" one time again to stop the stone surface.
Storing the KUROMAKU series in their special cases tin can too help prevent softening, but practice wipe away any moisture within the case first.

Should KUROMAKU sharpening stones be stored together with the white, spongy liner included when they are purchased?

No, the spongy liner (polyethylene foam) should not be used when storing sharpening stones later on employ. Polyethylene foam is a cushioning cloth used to prevent breakage during transportation, and if stones that are not completely dry are stored together with this foam, it may crusade them to degrade.

Miscellaneous

How much do Shapton products cost?

We practise non specify the retail price of Shapton products: please enquire your Shapton dealer for their electric current price list.

Tin can Shapton stones exist used outside Japan?

Yes, Shapton stones can be used anywhere. However, please note that particularly dry areas tin crusade the stones to crack.

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Source: https://shapton.co.jp/en/faq/

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