1. It's a simple three steps use:
   Sharpen – Knife tip down.
2. Hone – Knife tip up.
3. Polish – Spread the springs and pull the knife through.

That's it. Sharp knives in seconds.
Tip: Serrated knives require a different sharpening technique. Please read the second question before sharpening.

1. Insert the knife vertically into the sharpener.
   
2. Turn the blade so the serrated side faces the sharpening elements.
   
3. Gently pull the knife backwards through the sharpener.
   
4. Repeat a few times until the knife is sharp.
   

Note: Use only light pressure and let the sharpener do the work.

Yes. Vulkanus can sharpen both single-bevel and double-bevel Japanese knives. Double-bevel knives can be sharpened like standard knives, while single-bevel knives should be sharpened using the same technique as serrated knives.

No. Ceramic knives are too hard and brittle and may damage both the knife and the sharpener. We recommend using a professional sharpening service.

We recommend checking the blade sharpness after approx. 4 draws and repeating the process if necessary. You will then achieve optimum sharpness with minimal wear on the blade.

Please make sure the knife tip is facing downward while sharpening. Follow the steps shown in the video carefully, sharpen slowly and evenly for the best result.

The device is essentially designed to be exceptionally robust and sturdy. It has a 2-year manufacturer’s guarantee. Nevertheless, if an unexpected defect occurs, please contact us directly.

With normal use, the sharpening inserts will last for several years. If replacement is needed, spare parts are available for purchase in our store.

For best performance, keep your knives clean before sharpening and regularly remove metal filings with a damp sponge.

If needed, the sharpener can be cleaned in the dishwasher using the glass cycle.

The angle here is also in the range of 11° – 21° from vertical.

Orders are typically processed within 1–2 business days. Standard shipping within the United States usually takes 3–7 business days.

Once your order has shipped, you will receive a shipping confirmation email with tracking information, if available.

We offer free standard shipping on all U.S. orders over $100.

For orders below $100, shipping costs are calculated at checkout based on your delivery address, selected shipping method.

We accept returns within 14 days of delivery. Customers are responsible for return shipping costs unless the item was received damaged or incorrect.

Once the returned item has been received and inspected, approved refunds will be issued to the original payment method.

To start a return, please contact support@vulkanus-us.com.

We accept exchanges within 14 days of delivery. Customers are responsible for return shipping costs unless the item was received damaged or incorrect.

To start an exchange, please contact support@vulkanus-us.com.