Sharpening serrated knives: bread knives, saw edges and micro-serrations

If your bread knife cuts worse than it used to, it is worth looking at the edge and the right instructions. A serrated edge can be resharpened. The way you guide the knife differs from a straight blade.

Before sharpening: check the blade and the device

These notes apply to suitable steel knives with a serrated edge and the VG2 Professional. For other Vulkanus models, follow the respective operating instructions. The device is not suitable for ceramic knives.

The instructions below show how to guide a bread knife with a serrated edge. For special single-bevel blade shapes, such as a Japanese yanagiba, and for coated or damaged blades, first clarify suitability with the knife maker or our team. This also applies to valuable Japanese knives: the label “Damascus” alone is not enough to judge suitability.

How to sharpen a serrated edge in the VG2 Professional

Before first use, watch the Vulkanus instruction video for serrated edges. It shows how to guide the knife on the device.

Place the device on a firm, level work surface and hold it securely with your other hand. Clean the blade before sharpening.
Guide the blade from the handle to the tip through the sharpening elements. With a serrated edge, keep it horizontal: press lightly sideways towards the serration without tilting the blade.
Work gently and without force. Clean the blade afterwards. Test the cutting performance on a suitable surface for the intended use, never with your finger on the edge.

The horizontal guidance with sideways pressure follows the Vulkanus operating instructions for serrated edges. Straight blades call for different movements when sharpening and honing. Watch all instruction videos.

What you should know before buying

Can I damage my knife doing this?

We cannot give a blanket guarantee against damage or scratches for every blade and every use. Sharpening removes material from the edge. That is why your knife's suitability and the right guidance matter. If you are unsure, clarify both before use.

How often do I need to sharpen my bread knife?

Go by the cutting performance and the knife maker's recommendations. A fixed interval or a set number of pulls does not suit every knife. Sharpen when needed.

Does it also work for micro-serrations or outdoor knives?

Vulkanus also describes the use on micro-serrations. That does not mean every blade shape or a saw on the spine of a knife is suitable. Check the instructions for your knife and ask beforehand about special shapes.

Do I need prior experience?

You do not need whetstone routine. Take time before first use to read the instructions and practise the knife guidance shown there gently. Straight blades and serrated edges are guided differently.