Frequently asked questions
How fast can I get my knives razor-sharp?
It depends on the condition of your blade and the type of steel. But with OKNIV, you’ll typically get your knife razor-sharp in just 5-7 minutes. After that, keeping it sharp only takes a few quick rolls.
What’s the easiest way to clean the discs?
Maintaining your OKNIV sharpener is simple. Just wipe down the discs with a damp cloth to remove any residue and keep them performing at their best.
What if my blade is too tall to fit perfectly?
No worries. If you’re working with a larger blade, just place your OKNIV sharpener on a raised surface like a thick cutting board. This adjustment helps align the blade with the sharpening disc perfectly.
How do I know which angle to use?
As a rule of thumb, Western-style knives work best at 20°, and Japanese-style blades at 15°. If you’re unsure, check online for your knife’s recommended sharpening angle—it only takes a moment. Plus, our instruction manual clearly explains how to sharpen different types of knives.
Are the discs durable?
Our sharpening discs are crafted with industrial-grade diamond, one of the most durable materials available. When used properly, OKNIV discs provide long-lasting performance and won’t need frequent replacing. The diamond-coated discs deliver reliable sharpening results, while the ceramic discs are designed to refine and polish the blade for a superior edge. However, with regular use, both the diamond and ceramic discs will eventually wear down over time and should be replaced to maintain optimal sharpening performance.
Can I sharpen any knife with OKNIV?
OKNIV is compatible with most standard kitchen knives, cleavers, hunting knives with smooth edges, and folding knives. However, it is not designed for serrated blades or scissors, as these require a different sharpening approach.
Does OKNIV work with Damascus steel knives?
Yes, OKNIV can sharpen Damascus steel knives effectively. The precision sharpening angle and durable discs ensure the cutting edge is refined without damaging the intricate steel patterns.
Can I sharpen ceramic knives?
No, ceramic knives cannot be sharpened with OKNIV as the magnetic holder does not secure ceramic blades, and their unique
properties require specialized tools.
Can I use OKNIV for serrated knives?
OKNIV is not designed for serrated knives, as these can damage the discs and won’t achieve proper sharpening. Use alternative tools specifically made for serrated edges.
What’s the difference between sharpening at 15° and 20°?
A 20° angle offers durability and is best for Western knives, which often have softer steel. A 15° angle provides a sharper, more precise edge, ideal for harder Japanese blades. However, sharpening at a lower angle might require more frequent touch-ups and can remove more metal over time.