December 16, 2018

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Sneak peek: Suehiro Debado

Debado is a premium series from Suehiro made of aluminum oxide with the magnesia binder similar to Chosera and Shapton Pro series. The magnesia binder gives Debado excellent sharpening quality and performance, and high wear resistance. Debado series stones are universal and can be used to sharpen knives of any steel including high carbon, vanadium, and chromium steels.

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December 14, 2018

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Sneak Peek: Venev OCB Bonded Diamonds

The OCB version of Venev Diamonds utilizes a brand-new yellow binder with no abrasive particles in the composition. OCB is available in extra-fine grits only and offers better scratch-free sharpening result.

Venev OCB Diamonds are available in F 1200 grit (2.5 um) only. F 800 grit (6 um) will be released in Q1. Dual-sided formats of OCB will be released at the same time.

  • I have the original Venev diamond stone 1200 grit. Do I need the OCB?

    Legacy binder composition includes medium-hard particles up to 7 microns large. (It was necessary to stabilize diamond/binder matrix.) As result, when sharpening some steels the legacy F 1200 and F 2000 may not show noticeable progression after F 800. In this case, the new OCB diamonds will be the good upgrade.

  • Do I need to lap OCB diamonds?

    We recommend lapping all Venev diamonds including OCB because flatness tolerance is the same as for legacy diamonds. However, it's not mandatory for OCB version because the surface is finer.

  • How about OCB F 2000 grit?

    It will not be released due to substantial technology limits. F 2000 will be legacy only.

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December 13, 2018

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Sneak peek: Metallic Bonded Diamonds

New Metallic Bonded Diamonds are more wear-resistant and have better geometry "out of the box" than resin bond Venev diamonds. Metallic diamonds are available in 7 grits, the coarsest is 40 grit (500 microns).

 

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December 11, 2018

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Future Products Public Statement

No matter how hard Hapstone company tried to bring products on the market, unexpected circumstances caused multiple delays in production. Therefore, Gritomatic and Hapstone came to the tough decision to cancel all active preorders and eliminate preordering at Gritomatic. Breaking the promises is much worse than delays in production. We apologize to all customers.

All upcoming products are still in development, including Hapstone R1 (in the final stage). No product we ever mentioned in social networks, forums and tradeshows, has been canceled. However, all upcoming or out-of-stock Hapstone products are  "Done, when it's done".

October 06, 2018

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Migration from Wicked Edge

Hapstone has recently introduced the Guide Rod for Wicked Edge stones and paddles. The Guide Rod is optional accessory compatible with Hapstone M2, V7, V6 knife sharpeners as well as upcoming Hapstone R1. It can be purchased in Gritomatic. In order to simplify the migration from Wicked Edge to Hapstone, for all new orders of Hapstone knife sharpeners, the Guide Rod will be shipped for free. after a customer provides photo proofs of Wicked Edge ownership.

Hapstone knife sharpeners become the most versatile and capable to use the vast majority of existing sharpening stones including Edge Pro, KME, Spyderco, bench stones up to 210 mm, pocket stones of any size, and now Wicked Edge!

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May 25, 2018

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Gritomatic on Blade Show 2018

At last, we have received the final production sample of Hapstone R1. We are ready to show it!

Hapstone R1 completes the full product line of knife sharpeners:

  • Hapstone M2 in the economy segment
  • Hapstone V7 in the middle
  • Hapstone R1 in the high-end segment

It was the tough time for Hapstone as R1 and M2 were in development simultaneously. R1 was almost ready in 2017 but was completely redesigned.

We will show all three knife sharpeners on upcoming BladeShow 2018 in Atlanta.

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February 04, 2018

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Upcoming products

Gritomatic will add many new KME stones in March. A little preview of first three:

  1. Transition Coticule - purplish blend layer between Yellow Coticule and BBW with unique properties (like a higher performance than Coticule and BBW.) [Photo shows BBW - Transition Coticule - Yellow Coticule for comparison]
  2. Alumina-Zirconia Ceramic (limited edition) - the cut of a LapMaster ceramic disk for lapping microprocessor integral chips. Alumina-Zirconia outperforms Alumina in abrasion resistance.
  3. Soft Washita from Dan's Whetstone - coarser version of Soft Arkansas.
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October 17, 2017

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Interactive grit chart

Take a look at our new Interactive grit chart. Whenever you have any sharpening stone opened in Gritomatic.com, you may see grit information in specs. Different colors corresponds to grit range (extra coarse/coarse/medium/fine/extra fine/ultra fine), and abrasive scale is specified.

If you want to check how these grits correspond to another scale, you may click button to open interactive chart. The emphasized column is an abrasive scale used for the selected sharpening stone. Crystal shaped marks show values available grits or a composition of stone set. The green horizontal ruler floats above mouse cursor and helps you to convert grit to another scale. Phone and tablet users may click anywhere to move the ruler to another position.

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October 14, 2017

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Renaming Attention

Gritomatic synthetic stones made of silicon carbide and aluminum oxide can be labeled in either FEPA-F or JIS grit scale. To make grit uniform and customer-friendly, we have started transition to the japanese (JIS) grit scale for all Gritomatic waterstones. Old naming: F 120, F 220, F 400, F 600, F 1000. New naming: 120, 240, 600, 1000, 2500.

October 12, 2017

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Hapstone V7 Hints

There are some counter-intuitive things in Hapstone V7 not covered by User's Guide.

1) The stone holder has little black screw as shown on photo. You can think its purpose is fastening 2 parts of horizontal rod during assembling. But it's not. The little screw is stopper limiting movement of stone holder during readjusting. It's not intended to be used other way. Assembly of horizontal rod is made by hands only, without any tools.

2) The official angle range for Hapstone V7 is 11 to 47 degree, which outperforms most of competition sharpeners. However, you can extend angle range to insane 3 degree! You will not find it in User's Manual, because there are some limitations. If you need super acute sharpening angle, you may detach three point guide and thickness compensator from V7 base. These are main obstacles for super acute angles. Limitations: you have to opt out three-point guide; V7 must be positioned close to far side of your table to give the horizontal rod enough space for movement.

3) Hapstone V7 does not have "scissors sharpening" in feature list. Scissors attachments is still in development, but you can set blunt angle up to 70 degree right now. There is round hole in the middle of V7 base. Using scewdriver you can detach orange pivot rod holder and attach it in the middle. Now, if you fasten your scissors on working table, you can sharpen it!

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