Abrasive Engineering — CBN · Diamond · Ceramic
Sharpening results depend on abrasive type, grit progression, stage geometry, and how the user maintains the edge. We discuss abrasives in plain engineering language — no unsupported lab charts or buzzword specs.
Three core abrasives
| Abrasive | Role | Typical use in our programs |
|---|---|---|
| Diamond | Fast cutting; good for reshaping and repair | Coarse/medium stages; portable diamond surfaces |
| CBN | Superabrasive suited to many hard steels when duty cycle justifies it | Selected CBN stages / modules |
| Ceramic | Refining / polishing and edge maintenance | Fine stages, ceramic rods, finish passes |
Carbide and other media may appear in pull-through designs where appropriate — disclosed per SKU.
CBN vs Diamond
- Both are superabrasives Selection depends on steel, desired removal rate, stage position, and cost.
- Diamond Widely used for fast material removal in consumer and prosumer sharpeners.
- CBN Considered when the application and steel family make it a better fit — recommended from the brief, not buzzwords.
- No universal winner We do not claim one abrasive is always better.
Grit selection
Coarse
Repair, reshape, damaged edges.
Medium
Form the working edge.
Fine / ceramic
Refine and polish.
Exact grit numbers are confirmed per project and supplier lot — published only when verified for that SKU.
Kitchen knife applications
Pull-through multi-stage tools, arch designs for sets, and counter-friendly formats. Priorities: safe guides, consistent stages, easy consumer use, brandable housings.
Outdoor / EDC applications
Portable and folding formats, field durability, pocketability, and abrasive stacks that recover working edges away from the kitchen.
Edge refinement & stages
Final stages and ceramic elements refine the apex after coarser work. Typical pull-through logic: repair → sharpen → refine. Stage count (2 / 3 / 4) follows channel and retail price. Fixed-angle systems when the brand wants guided control.