✦ Verified product
Hapstone CBN Recommended stones set
USD 349.00
Hapstone USA
Verified independent store
→
Hapstone CBN Recommended Stones Set CBN sharpening stones for modern high-hardness steels, combining aggressive Start CBN stones and smoother Premium CBN stones. Abrasive Cubic bor
on nitride Hapstone CBN sharpening stones are made from cubic boron nitride, also known as elbor. Premium bond Metal-organic bond Hapstone Premium CBN stones use a metal-organic bond with wear resistance close to metal bonds and smoother sharpening. Start series Electroplated CBN Hapstone Start Series electroplated CBN stones are designed for aggressive material removal and fast reprofiling. Grit progression Start 100 grit150 µm Start 220 grit70 µm Premium 400 grit40/28 µm Premium 800 grit20/14 µm Premium 1500 grit10/7 µm Recommended set Start and Premium CBN progression The set combines Hapstone Start CBN stones for coarse sharpening with Hapstone Premium CBN stones for smoother controlled sharpening stages. This progression includes 100, 220, 400, 800, and 1500 grit stones. For final polishing, Hapstone recommends using Hapstone Poly Diamond Suspension in 6, 3, and 1 µm. Benefits CBN sharpening advantages CBN stones are durable yet smooth in operation. They are often compared to Japanese water stones but are significantly more durable. CBN stones do not require soaking or special preparation and can be used without cutting fluids. CBN crystals have an octahedral structure with multiple cutting edges, which allows efficient sharpening while minimizing deep scratches. All stones share the same size, allowing grit progression without adjusting the sharpening angle. Performance 100% CBN concentration Excellent sharpening efficiency is achieved thanks to 100% concentration of CBN1 abrasive grain. Specifications Premium working layer6” × 0.94” × 0.12” (150 × 24 × 3 mm) Start working layer6” × 0.94” × 0.06” (150 × 24 × 1.5 mm) Premium blank size6.3” × 0.94” × 0.2” (160 × 24 × 5 mm) Start blank size6.3” × 0.94” × 0.12” (160 × 24 × 3 mm) Premium binderHybrid Start binderElectroplated AbrasiveCBN Concentration100% Working withOil, water, without lubricants Country of originUkraine Stone typeStone mounted on a 45° beveled blank .r2-case-apple{color:#191919;line-height:1.5} .r2-case-apple *,.r2-case-apple *::before,.r2-case-apple *::after{box-sizing:border-box;font-family:inherit!important} .r2-case-apple img{display:block;width:100%;height:auto;border:0;border-radius:24px} .r2-case-apple section{margin:0 0 20px} .r2-hero{text-align:center;padding:12px 0 4px} .r2-hero-copy{max-width:760px;margin:0 auto 18px} .r2-hero-media{max-width:520px;margin:0 auto} .r2-hero h1{ margin:0 0 12px; font-weight:700; letter-spacing:-0.02em; font-family:'Montserrat',sans-serif!important; color:inherit; } @media(min-width:575px){ body .r2-case-apple .r2-hero .r2-hero-copy h1.hero-text{ font-size:36px!important; line-height:50px!important; } } .r2-subtitle{ max-width:720px; margin:0 auto; font-size:19px; line-height:1.4; color:#6e6e73; } .r2-case-apple .r2-feature-card p.r2-card-label, .r2-case-apple .r2-split-copy p.r2-card-label, .r2-case-apple .r2-dark-copy p.r2-card-label{ font-size:12px!important; font-weight:700!important; letter-spacing:.06em!important; text-transform:uppercase; color:#6e6e73!important; font-family:'Montserrat',sans-serif!important; margin:0 0 8px; } .r2-card-label.light{color:rgba(255,255,255,.72)!important} .r2-feature-grid{ display:grid; gap:16px; } .r2-feature-grid-2{ grid-template-columns:repeat(2,1fr); } .r2-feature-grid-3{ grid-template-columns:repeat(3,1fr); } .r2-feature-card{ background:#f5f5f7; border-radius:24px; padding:24px; } .r2-feature-card h2, .r2-split-copy h2{ margin:0 0 8px; padding-bottom:0!important; font-size:26px; line-height:1.15; font-weight:700; letter-spacing:-0.02em; } .r2-split-copy h2{ font-size:28px; } .r2-feature-card p, .r2-split-copy p{ margin:0; font-size:16px; line-height:1.45; color:#373e48; } .r2-feature-card p + p, .r2-split-copy p + p{ margin-top:10px; } .r2-duo{ display:grid; grid-template-columns:.35fr 1fr; gap:16px; margin-bottom:20px; } .r2-package-card{ background:#f5f5f7!important; color:#191919; } .r2-package-list{ display:grid; gap:10px; } .r2-package-list div{ display:grid; grid-template-columns:auto auto; justify-content:center; gap:12px; align-items:center; } .r2-package-list b{ font-size:15px; line-height:1.45; font-weight:600; color:#191919; text-align:left; } .r2-package-list span{ font-size:14px; line-height:1.45; color:#6e6e73; } .r2-split{ display:grid; grid-template-columns:1fr; gap:24px; align-items:center; background:#fbfbfd; border-radius:28px; padding:28px; } .r2-dark-card{ background:#191919; color:#fff; border-radius:28px; padding:28px; } .r2-dark-card-soft{ border-radius:32px; } .r2-dark-copy{ margin-bottom:18px; } .r2-spec-grid{ display:grid; gap:16px; } .r2-spec-grid-2{ grid-template-columns:repeat(2,1fr); } .r2-spec-item{ background:rgba(255,255,255,.06); border-radius:18px; padding:18px; } .r2-spec-lines{ display:flex; flex-direction:column; gap:8px; } .r2-spec-lines div{ display:flex; justify-content:space-between; align-items:flex-start; gap:12px; } .r2-spec-lines span{ font-size:13px; line-height:1.4; color:rgba(255,255,255,.75); white-space:nowrap; flex:0 0 auto; } .r2-spec-lines b{ font-size:14px; line-height:1.45; font-weight:600; color:#fff; text-align:right; flex:1 1 auto; min-width:0; word-break:break-word; overflow-wrap:anywhere; } @media(max-width:989px){ .r2-feature-grid-3, .r2-feature-grid-2, .r2-duo, .r2-spec-grid-2{ grid-template-columns:1fr; } } @media(max-width:749px){ .r2-feature-card, .r2-split, .r2-dark-card{ padding:18px; } .r2-package-list div{ grid-template-columns:1fr; gap:2px; text-align:center; } .r2-package-list b{ text-align:center; } .r2-spec-lines div{ display:grid; grid-template-columns:1fr; gap:3px; align-items:start; } .r2-spec-lines span{ font-size:12px; line-height:1.35; white-space:normal; } .r2-spec-lines b{ font-size:14px; line-height:1.4; text-align:left; white-space:normal; word-break:break-word; overflow-wrap:anywhere; } .r2-subtitle{ font-size:17px; } }
