ROLLIE™ DIAMOND KNIFE SHARPENER

Rollie gives you a rare combo: simplicity, control, and razor-sharp results - a serious upgrade over most sharpening options.

Compared to a Honing Rod

Honing rods can keep your blade aligned, but they don't truly sharpen. Rollie uses a diamond-coated wheel to actually restore a dull edge and bring back real sharpness.

Compared to Pull-Through Sharpeners

Pull-through tools are fast but often too aggressive - grinding away too much metal and shortening the life of your knife. Our rolling design and magnetic guide let you sharpen at the correct angle, gently and evenly.

Compared to Whetstones

Sharpening stones offer accuracy - but they’re slow and hard to master. Rollie delivers similar precision thanks to its angle control, but without the steep learning curve.

Compared Sharpening Services

Professional services work, but they cost money and take time - you’re without your knives while you wait. Rollie gives you pro-level results on your schedule, right at home.

The 20° angle delivers a strong, durable edge - perfect for daily kitchen use and tougher outdoor tasks. It sharpens fast and holds up well under pressure. The 15° angle creates a sharper, more refined edge, ideal for premium blades like Damascus or high-carbon steel - great for clean, delicate cuts. Here’s a quick overview:

20° Angle – Tough & Long-Lasting

This angle gives your blade a durable, everyday edge that handles tougher cutting jobs with ease. It’s quick to sharpen and built for longevity.

Best for:

• Western-style kitchen knives (chef’s, utility, etc.)
• General stainless steel knives
• Pocket and survival knives
• Outdoor or hunting blades
  

15° Angle – Sharp & Precise

Designed for a razor-fine edge, this angle is ideal for high - performance blades that require extra sharpness and control.

Best for:

• Japanese-style kitchen knives (santoku, nakiri, etc.)
• High-carbon steel blades
• Damascus knives
• Fillet and specialty knives
• Precision slicing tools
  

These are general suggestions - if in doubt, check what angle your knife manufacturer recommends for best results.

Definitely. Rollie™ is built with user safety as a top priority. Its magnetic holder keeps the knife securely positioned at the correct angle, reducing the chance of slips or improper sharpening. The smooth, controlled rolling action also lowers the risk of accidents, making it safe for anyone to use - especially when compared to traditional whetstones, where the blade requires constant manual movement.

Sharpening with Rollie™ for the first time takes between 2 and 6 minutes, since most knives have a cutting angle between 15° (Japanese) and 20° (Western & Others). So you just pick a side and sharpen it to your chosen degree. Harder materials like Damascus can take up to 10 minutes on the first sharpening.

Re-sharpening takes only a few rolls back and forth, because the specific angle has already been given to the blade.

Rollie™ is designed for longevity, featuring high-quality materials, like diamond-coated and ceramic sharpening discs. These components are crafted for frequent use, guaranteeing lasting performance and dependability over time.

At Rollie, your satisfaction is our priority. If you encounter any issues with your order - such as lost packages or damaged items - we offer a 30-day replacement guarantee.

Simply contact us within the specified time frames, and we’ll be happy to assist you with a free replacement.

For more information, take a look at our Return & Refund Policy.