Stones with grits finer 3 microns either require preparation on cast iron plates, or they will be self-polished after sharpening of 30-50 knives. Then they will be of gold color and work well. 

 

Use and cleaning (unclogging)

Use any comfortable oil (baby, olive..) to prevent glazing. If glazed - clean (unclog) with alcohol and toothbrush.

Maintenance is only needed every year or two to flatten stone or "open up" abrasive grains. In 1-2 years you may need to flatten stone, on the glass with silicon oxide powder or iron oxide - grinding is carried out using powder of the same grit as the will be leveled sharpening stone (!).

   Tips:

Question from:  marbalie-0 (148)

   Are these stones resin bonded or electroplated? Not really seeing specifics.

Answer:

   These stones are bonded by a copper-tin metal. This distinguishes them from Chinese (bonded by electroplated) and from European ones (on a resin bond). That is, cubic nitride boride (CBN) is added to boiling copper-tin lava and it is "baked" in a metal base. This technology is available ONLY at the Poltava Diamond Tools factory (!), which makes the sharpening process with these types of stones the strongest and most durable in the WORLD - you can sharpen up to 77,000 knives (depending on the Grit size) with one bar!

For Example:

   A lot of people make mistake between CBN-stones and Diamond:

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From the previous Buyer from the USA: innuendos (1117) US $ 515.00

•      AMAZING stones  - they remove steel fast, with minimal effort. I like the fact that the abrasive is bonded in metal (copper + tin) and will resist dishing a lot better than resin (Note from seller: ONLY PDTools, Ukraine CAN PRODUCE the CBN-stone IN THE COPPER+TIN BOILING LAVA IN THE WORLD IN NOWADAY! 😊). I have sharpened 3 knives and for D2 steel I only needed up to the 650 Grit to produce a razor's edge - google "PDT CBN Stones" (Note from seller: PDTools, Ukraine CBN-stone😊) and watch video or search title at YouTube. These left my cheaper diamond stones in the dust. This seller is very knowledgeable and stands behind his products. A great seller!

The EXPERT Set / 25mm – CBN sharpen/honing stone Edge Pro Ruixin TSPROF Hapstone (# 175387035682)

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From the previous Buyer from the USA: reno_raines99_5 (84) US $ 515.00

•     I've had these for a week now and they are the best diamond stones (Note from seller: This is the CBN-stone😊) I have tried. They are expensive and may not be for everyone but if you are someone who does a lot of sharpening and doesn't want to keep replacing the diamond stones or just wants the best product then this is for you.

The EXPERT Set / 25mm – CBN sharpen/honing stone Edge Pro Ruixin TSPROF Hapstone (#175387035682)

   Additionally:

   Diamond contains carbon, and all steel contains carbon. That is, when you are sharpening with diamonds, carbon sharpens carbon, which is not the best way to process steel. Only CBN (Cubic Boron Nitride) does not contain carbon and it is close to diamonds in hardness! Thus, there is no MATERIAL BETTER than CBN yet 😊!
P.S.
   These bars will be inherited by your grandchildren, for sure - we have NO DOUBT about this, and IN ADDITION no lubricants or coolants are required during the sharpening - your desktop will always be clean. 😊

https://youtu.be/qtsX5jxz6g8 (Example. For European Market. Not for selling!)

😊 Cubic Boron Nitride (CBN) is second only to diamond in hardness, BUT two times that of diamond in high temperature resistance, four times that of traditional abrasive in wear resistance, and have extraordinary thermal conductivity. It is designed for fine grinding and polishing in a variety of demanding surface finishing, such as metal bond grinding wheels, resin bond grinding wheels, vitrified bond wheels and electroplated products.

😊  Only we – PrJSC Poltava Diamond Tools, Ukraine – makes CBN by metallic (Copper + Tin) bonded in the sharpening stones

F4,000 grit (5/3 μm) CBN sharpening/honing stones 150-25-7-3 to Edge Pro Ruixin TSPROF Hapstone (see on 2:09 minutes on video: https://youtu.be/RAy8olk8cMo)

About this item:

·        4,000 grit – U.S. Standard ANSI

·        CBN sharpening stones, Poltava, working surface: 

·        5 29/32" x 63/64" x 1/8"

·        (150 x 25 x 3 mm) 

·        Length:     150 mm = 5.91 inches 

·        Width:         25 mm = 0.98 inches 

·        Thickness:   3 mm = 0.12 inches 

·        REMEMBER – It was mounted to aluminum plate: 160x25x4 mm

·        Material: CBN - cubic boron nitride. It has the best cost/productivity ratio for processing of STEEL, comparing to diamond and cheaper stones. 

·        CBN is a generic name, there are also other names of this material, depending on manufacturer: Borazon, Elbor.  

·        CBN stones are similar in qualities to Japanese whetstones but have had ten times longer working life.

·        CBN can be used without lubricants

·        Compatible with Edge Pro, RUIXIN, TSPROF, Hapstone etc.

·        Durable metallic bonding (Copper + Tin)

·        Working surface: 150 x 25 x 3 mm (5 29/32" x 63/64" x 1/8"), mounted on 4 mm aluminum blank

·        Sharpening stones overall dimensions (with aluminum blank): 160 x 25 x 7 mm (6 19/64" x 63/64" x 9/32")

 Attention:

Warning:  PDTools trademarks on the back of the 5/32” = 4 mm (!) Hight aluminum blank can guarantee that you have purchased a PJSC Poltava Diamond Tools Super abrasives factory’s product for the American market from an authorized dealer in North America (See the photo) !

·        ~ Elbor (Leningrad + boron) or Borazon (from boron + nitrogen) or Cubonite or Kingsongite or Kiborite are trademarks of super hard materials based on cubic β-modification (sphalerite) boron nitride, or cubic boron nitride (the Soviet Union abbreviation - KNB, the USA abbreviation – СBN - Cubic Boron Nitride). The Poltava Diamond Tools factory https://youtu.be/mFB_-oeHzic was established since 1966 (Already 66 years on the market!): https://youtu.be/wMkOUP8DtWs . Example of CBN “Premium” – see here (WE ARE SELLING “Premium Light”): https://youtu.be/uo1giROeLuk   

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·       SOMETHING COOL ABOUT CBN-sharpening stones: These bars, unlike natural stones, can sharpen from 37,000 to 73,000 knives (!) Depending on the grit’ value of the bar - you can give these bars to children by inheritance :-)

*************

ANYONE WHO BOUGHT THE FIRST CBN-Stone, WILL RETURN TO US FOR SURE FOR THE SECOND ONE!

*************

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From the previous Buyer 😊from Singapore😊:  denebman (17) US $ 283.00

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From the previous Buyer from the USA:  sim_js_hnori2 (26) US $ 515.00

•     Hello there, I have had a chance to use the stones on 2 knives. I must say they really do very well compared to my cheaper TSPROF diamond stones or my synthetics. They cut fast, leave a decent scratch pattern and bring up an apex quickly!
  
• Five stars are not nearly enough! Super seller! Would highly, highly recommend. Seller went out of their way to exceed expectations. This is how it's supposed to be!

The EXPERT Set / 25mm – CBN sharpen/honing stone Edge Pro Ruixin TSPROF Hapstone (#175387035682)

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From the previous Buyer from the USA: mar642873 (9) US $ 79.20

•     This is my third purchase of CBN stones 👍. From this seller these CBN stones cut better than any of my premium resin bonded diamond stones 👆. They are of the highest quality that I have ever purchased. Yes, they have the feel and response of a Japanese Waterstone but cut 10 times faster and leave a much shallow scratch pattern that can bring your edges to a mirror polish with just five stone progressions. In addition, the seller is a vast knowledge of sharpening he has answered all of my questions promptly 👌.

28/20μ (F 650) 25mm - CBN sharpen/honing stone Edge Pro Ruixin TSPROF Hapstone (#325236036938)

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From the previous Buyer from the USA: reno_raines99_5 (84) US $ 515.00

•     I've had these for a week now and they are the best diamond stones (Note from seller: This is the CBN-stone😊) I have tried. They are expensive and may not be for everyone but if you are someone who does a lot of sharpening and doesn't want to keep replacing the diamond stones or just wants the best product then this is for you.

The EXPERT Set / 25mm – CBN sharpen/honing stone Edge Pro Ruixin TSPROF Hapstone (#175387035682)

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From the previous Buyer from the USA: mar642873 (8) US $ 79.20

•     These sharpening stones are of the highest quality that I have ever found. The CBN stones will take your sharpening to the next level I didn’t think it was possible. These are the very best quality that money can buy. The shipping and communication were perfect. I would recommend the seller 1000%. 😊
•     I’m on my second CBN-stone now I’ll write my thoughts down in detail in the next day or so and get that to you, but I can already tell you as compared to any of my higher end stones these stones work so much better faster, more efficient. I absolutely love them.

5/3μ (F 4,000) 25mm-CBN sharpen/honing stone Edge Pro Ruixin TSPROF Hapstone  (#175335029704 )

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From the previous Buyer from the USA:  dmitry5 (2512) US $ 515.00

•     Excellent customer service, all my questions were answered. Long-term support offered by seller. Very fast shipping, well packed. Competitive price on very high-quality CBN sharpening stones. Expect this to be a once in a lifetime purchase.

Set of Stones/25mm–CBN sharpen/honing stones Edge Pro Ruixin TSPROF Hapstone (#175387035682)

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From the previous Buyer from the USA: orangetornado (197) US $ 420.00

•     Fantastic set of stones! They arrived very quickly and were packaged with extreme care. Communication was fantastic. I am very pleased. Thank you very much! I would readily and with pleasure do business with you again!

The PRO Set / 25mm – CBN sharpen/honing stone Edge Pro, Ruixin, TSPROF, Hapstone (#175498258194)

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From the previous Buyer from the USA: o***d (581) US $ 82.00

•     WOW. Great. We are praying for you!

CBN sharpening/honing stones 150 mm/ 6'', combined bond, any grain size, Poltava (#284557979185)

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From the previous Buyer from Israel: vverdel (610) US $ 79.20

•     This stone just instantly cuts metal without oil, clean, pleasant and fast work! Super quality from a super manufacturer!

200/160μ (F 80) 25mm - CBN sharpen/honing stone Edge Pro Ruixin TSPROF Hapstone (#325235872075)

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From the previous Buyer from Israel:  o0o3bo0od-34 (2) US $79.20

•     Great find, excellent quality and professional finishing.

5/3μ (F 4,000) 25mm - CBN sharpen/honing stone Edge Pro Ruixin TSPROF Hapstone (#175335029704)

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From the previous Buyer from the USA:  815vladimir (858) US $79.20

•     All perfect. Thank you very much!

14/10μ(F 1,500)25mm-CBN sharpen/honing stone Edge Pro Ruixin TSPROF Hapstone (#325236057831)

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From the previous Buyer from the USA:  w*r*b*_0 (202) US $79.20

•     I'm no cbn expert, but these stones cut carbide, seems like good quality! a+.

125/100μ(F 160)25mm-CBN sharpen/honing stone Edge Pro Ruixin TSPROF Hapstone(#354114096911)

To be, or not to be, that is the question:

BY WILLIAM SHAKESPEARE

(From Hamlet, spoken by Hamlet)

Do you wanna “to be, or not to be” on the Top Level? 

Do you wanna “to be, or not to be” on the Supreme Union?

Do you wanna “to be, or not to be” the BEST?

If you wanna TO BE, WE ARE INTRODUCING TO YOU - what do you WANT: 

THE NEW ERA ON the sharpening’s community coming, and IT IS COMING NOW - ELBOR's (CBN) – as the artificial diamond!

👑We Are an Official Representative PJSC PDT® (Ukraine) in the USA👑

THE OFFICIAL PRODUCT FROM PJSC PDT® IN SOUTH AND NORTH AMERICA

👑 Lifetime Bonded Clutch Warranty from PJSC PDT® 👑

 So,

Put aside your Arkansas stones - let them "rest",

Put your Naniwa’s stone into some water before it starts to work - let them "drown" in the water & "suck" something,

Give your Boraide’s sharpening stones away to your friends - let them "remember” you...

And

GO TO MOVE ON CBN (ELBOR / BORAZON) THAT GIVE YOU OPPORTUNITY:

v  No fear of getting cancer - no phenol-formaldehyde bonds, only copper-tin (soft brass) bond between Elbor (CBN) grains.

v  No parasitic scratches on the cutting edge on your knives like natural diamond did - the artificial Elbor (CBN)’s crystal is "grown" in the laboratory under the control of engineers and has smooth edges.

v  No water or oil as lubricants, and, as a result, no dirt on the worktable when you will be sharpening your knives – Elbor (CBN) works dry.

v  There is no need to prepare the sharpening stones for work - just "take it" and "work with".

v  No purchases of new stones after one year of operation - at least 17,300 sharpened knives are a factory guarantee (applies to stones with a grain size of 1,000 Grit and above).

v  No headaches with the return of goods - send to the factory a passport with the serial number on the sharpening bar and receive a new sharpening stone without complain (in the absence of signs of strong mechanical impact or deliberate damage).

v  Lifetime factory warranty until the grinding mass disappears in the stone (it is 1,5 mm)

v   

So, ARE YOU “IN’ or “OUT”?

v   

If you are “IN”, then I will remind you of the story that the USSR had three main pillars of industry that you probably know about:

1. Kalashnikov assault rifle - AK-47

2. The first Korolev rocket in space with the first SPUTNIK and then with the first cosmonaut YURI GAGARIN.

3. The artificial diamonds – ELBOR (CBN).

 Dear friend,

You may remember the first two, but of course you did not know about Elbor (CBN).

So, Elbor (CBN) is a secret development of Soviet scientists (In the USSR, cubic boron nitride was first synthesized in 1960 at the Institute for High Pressure Physics of the Academy of Sciences under the leadership of academician L.F. Vereshchagin and was named Elbor (Leningrad Borazon (CBN – Cubic Boron Nitride – THE USA ABBREVIATION). Since 1965, Elbor (CBN) has been synthesized on an industrial scale using the technology of the “Ilyich Abrasive Plant” (City of St. Petersburg – before named Leningrad city), which became available to the whole world after Perestroika. The Poltava Diamond Tools Factory (Ukraine) sold this technology to Holland in 1993, and now the Elbor’s artificial diamond produced in Holland have become the basis to manufacture the "PREMIUM" series sharpening stones in Poltava Diamond Tools Factory (BEWARE OF COUNTERFEIT FROM ASIA) with the following characteristics:

Description

Metallic CBN Sharpening Stones are used for sharpening knives using Edge Pro, Ruixin, Hapstone, TSPROF etc. sharpeners. CBN (Cubic Boron Nitride) is the second-hardest material after diamond. Metallic CBN stones utilize copper-tin alloy bonding for high endurance and low wearing rate.

Metallic CBN Stones consists of a 3,0 mm thick metal plate (making by one piece of the 1,5 mm CBN-bearing + the 1,5 mm copper-tin alloy) mounted on a 4,0 mm a high-quality aluminum blank.

CBN's qualities include high levels of high hardness, strength, abrasion resistance, and thermal and chemical resistance. These characteristics exceed the values of synthetic diamonds and conventional abrasives such as silicon carbide and aluminum oxide. CBN’s high thermal stability and chemical resistance make it suitable for sharpening in conditions where synthetic diamonds are not normally employed.

CBN offers excellent performance in sharpening knives of any steel. Due to its high resistance specs, CBN can be used dry without lubricant. This makes CBN the cleanest of the available sharpening stones.

How to use

Metallic CBN can be used without lubricants.

Metallic CBN stones may have tone imperfections. Metallic CBN may become darker over time due to natural metal oxidizing, it does not affect the sharpening.

Metallic CBN stones do not require any preparations.

Q & A

·        CBN sounds like a wonderful abrasive that is far better than anything else on the market. So, what's the catch?

CBN provides high performance, sharpens any steel, has low wear rate and low stress, does not create mess, and does not leave unwanted grooves. The price tag is expensive. However, remember that the number of knives guaranteed by the manufacturer that you will be sharpening with CBN is 7300 knives (applies to stones with a grain size of 1,000 Grit and above), and for example, you will sharpen 1217 knives with Boride (information obtained in practice from Mr. Efim Dreer (Canada) - professional sharpeners and inventor of the “Efim-5” sharpening system). That is, you buy CBN once AND FOR THE WHOLE LIFE ... even your grandchildren will use these CBN 100% for sure, if they decide to sharpen knives!

·        Can I sharpen ceramic knives with CBN?

Theoretically, yes. However, sharpening ceramic knives is technically difficult and uneconomical in most cases. CBN stones can cause microchipping when used on ceramics. Consider purchasing a new ceramic knife instead of sharpening it.

·         What is PDT means, it printed on the sharpening blanks?

The PDT is an abbreviation for the name of the "Poltava Diamond Tools" plant in Ukraine - the manufacturer of these sharpening blanks made from CBN: https://youtu.be/lOcRcQfGYMk .

        Please, note that if there are any problems with your order, contact us first via eBay giving full details of any problem along with your user ID - Before leaving any Negative or Neutral feedback please reach out to us, we will resolve the issue as quickly as possible :-).

CBN sharpening stones

An analog of diamond bars that allow you to get a mirror edge are bars of boron nitride (CBN). Cubic boron nitride is a synthetic material that is close to diamond in hardness but has higher heat resistance. It is a chemical compound of two elements — boron (43.6%) and nitrogen (56.4%) and has a crystal lattice with almost the same structure and parameters as diamond. CBN bars are produced on metal bonds, which are based on copper and tin compounds, as well as on an organic bond (Bakelite) based on phenol-formaldehyde resin (We do not recommend this Bakelite bond as its use increases the likelihood of cancer and is not recommended for sale in the state of California). At the same time, it should be noted that CBN bars on a metal bond, despite their hardness, are able to give the secondary bevel a clean mirror surface. However, as with diamond polishing, this will take quite a long time. The 3/2 μm (F 5`000) bar already gives excellent results, and the 2/1 μm (F 10`000) bar guarantees a clean and even mirror.

Metallic CBN can be used without lubricants.

Metallic CBN stones may have tone imperfections. Metallic CBN may become darker over time due to natural metal oxidizing, it does not affect the sharpening.

Metallic CBN stones do not require any preparations.