Without a doubt, assigning a single number to any sharpening stone and declaring that to be its grit value is a very tempting idea, since it would make the task of comparison trivially easy. People will always try to reduce a complex problem to a single number, and grit value is no exception. The 9μm particle from our example may be used in 8 different grit values in accordance with JIS. You cannot define the grit value of a single particle. Classifications do not work with individual particles. Grit value, in all the existing classifications, defines the statistical composition of the abrasive across a huge number of particles. That is because the way we are asking the question does not make sense. And in this case, your answer will be incorrect, regardless of whatever values you name. What is its grit value? Most likely you will open one of the many different conversion charts available to determine a definite answer. A diamond particle is 9μm (microns) in diameter. Different manufacturers use different classification systems, which makes it difficult to compare sharpening stones. Surely you are familiar with the fact that there are different grit value classifications which are parts of national abrasive standards: the USA has ANSI, Europe has FEPA, Japan has JIS, and Russia has GOST standards. Vincent & Grenadines XCD ($) Suriname USD ($) Sweden SEK (kr) Switzerland CHF (CHF) Taiwan TWD ($) Tanzania TZS (Sh) Thailand THB (฿) Timor-Leste USD ($) Togo XOF (Fr) Tonga TOP (T$) Trinidad & Tobago TTD ($) Tunisia USD ($) Türkiye USD ($) Turks & Caicos Islands USD ($) Tuvalu AUD ($) Uganda UGX (USh) United Arab Emirates AED (د.إ) United Kingdom GBP (£) United States USD ($) Uruguay UYU ($) Uzbekistan UZS () Vanuatu VUV (Vt) Vietnam VND (₫) Zambia USD ($) Albania ALL (L) Algeria DZD (د.ج) Andorra EUR (€) Angola USD ($) Anguilla XCD ($) Antigua & Barbuda XCD ($) Argentina USD ($) Armenia AMD (դր.) Aruba AWG (ƒ) Australia AUD ($) Austria EUR (€) Azerbaijan AZN (₼) Bahamas BSD ($) Bahrain USD ($) Bangladesh BDT (৳) Barbados BBD ($) Belgium EUR (€) Belize BZD ($) Benin XOF (Fr) Bermuda USD ($) Bhutan USD ($) Bolivia BOB (Bs.) Bosnia & Herzegovina BAM (КМ) Botswana BWP (P) Brazil USD ($) British Virgin Islands USD ($) Brunei BND ($) Bulgaria BGN (лв.) Burkina Faso XOF (Fr) Burundi USD ($) Cambodia KHR (៛) Cameroon XAF (Fr) Canada CAD ($) Cape Verde CVE ($) Caribbean Netherlands USD ($) Cayman Islands KYD ($) Chad XAF (Fr) Chile USD ($) China CNY (¥) Colombia USD ($) Comoros KMF (Fr) Cook Islands NZD ($) Costa Rica CRC (₡) Croatia EUR (€) Curaçao ANG (ƒ) Cyprus EUR (€) Czechia CZK (Kč) Denmark DKK (kr.) Djibouti DJF (Fdj) Dominica XCD ($) Dominican Republic DOP ($) Ecuador USD ($) El Salvador USD ($) Equatorial Guinea XAF (Fr) Estonia EUR (€) Eswatini USD ($) Ethiopia ETB (Br) Falkland Islands FKP (£) Faroe Islands DKK (kr.) Fiji FJD ($) Finland EUR (€) France EUR (€) French Guiana EUR (€) French Polynesia XPF (Fr) Gabon XOF (Fr) Gambia GMD (D) Georgia USD ($) Germany EUR (€) Ghana USD ($) Gibraltar GBP (£) Greece EUR (€) Greenland DKK (kr.) Grenada XCD ($) Guadeloupe EUR (€) Guatemala GTQ (Q) Guernsey GBP (£) Guinea GNF (Fr) Guinea-Bissau XOF (Fr) Guyana GYD ($) Haiti USD ($) Honduras HNL (L) Hong Kong SAR HKD ($) Hungary HUF (Ft) Iceland ISK (kr) India INR (₹) Indonesia IDR (Rp) Ireland EUR (€) Israel ILS (₪) Italy EUR (€) Jamaica JMD ($) Japan JPY (¥) Jersey USD ($) Jordan USD ($) Kazakhstan KZT (〒) Kenya KES (KSh) Kiribati USD ($) Kuwait USD ($) Kyrgyzstan KGS (som) Laos LAK (₭) Latvia EUR (€) Lesotho USD ($) Liechtenstein CHF (CHF) Lithuania EUR (€) Luxembourg EUR (€) Macao SAR MOP (P) Madagascar USD ($) Malawi MWK (MK) Malaysia MYR (RM) Maldives MVR (MVR) Malta EUR (€) Martinique EUR (€) Mauritania USD ($) Mauritius MUR (₨) Mayotte EUR (€) Mexico USD ($) Moldova MDL (L) Monaco EUR (€) Mongolia MNT (₮) Montenegro EUR (€) Montserrat XCD ($) Morocco MAD (د.م.) Mozambique USD ($) Namibia USD ($) Nauru AUD ($) Nepal NPR (₨) Netherlands EUR (€) New Caledonia XPF (Fr) New Zealand NZD ($) Nicaragua NIO (C$) Nigeria NGN (₦) Niue NZD ($) North Macedonia USD ($) Norway USD ($) Oman USD ($) Pakistan PKR (₨) Panama USD ($) Papua New Guinea PGK (K) Paraguay PYG (₲) Peru PEN (S/.) Philippines PHP (₱) Poland PLN (zł) Portugal EUR (€) Qatar QAR (ر.ق) Réunion EUR (€) Romania RON (Lei) Rwanda RWF (FRw) Samoa WST (T) San Marino EUR (€) São Tomé & Príncipe STD (Db) Saudi Arabia SAR (ر.س) Senegal XOF (Fr) Serbia RSD (РСД) Seychelles USD ($) Sierra Leone SLL (Le) Singapore SGD ($) Slovakia EUR (€) Slovenia EUR (€) Solomon Islands SBD ($) South Africa USD ($) South Korea KRW (₩) Spain EUR (€) Sri Lanka LKR (₨) St.
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