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How whetstones work

Whetstones are used to finish the sharpening of steel edges after you have shaped them with a file. While the file removes material and provides the basic shape, the whetstone is used to fine-tune, polish, and remove burrs. The result is a sharp and durable edge that provides better grip on hard snow and ice.

Different types of whetstones

• Diamond whetstones – the most common and versatile. Available in different grits (e.g., coarse, medium, fine, extra fine) for different stages of sharpening.
• Ceramic whetstones – used for the very final polishing, providing an extremely sharp and smooth surface.
• Special whetstones – small stones for details, e.g., around ski tips or steel edge transitions.

How to use whetstones

1. Start with a file to shape and clean up the edge.
2. Use a coarser diamond whetstone to remove burrs and irregularities.
3. Continue with medium and finer stones to polish the edge.
4. Finish with an extra fine or ceramic whetstone for a competition finish.

Tips for best results

• Always use water or honing fluid with diamond whetstones – it extends the lifespan and provides a better sharpening surface.
• Work calmly and evenly along the length of the ski.
• Combine several grits for the best effect – coarse for polishing, fine for finishing.
• Remember that whetstones do not replace files – they complement each other.

Want to learn more?

In our guide Sharpen Steel Edges you will find detailed tips and instructions on how to use both files and whetstones correctly.

FAQ – Common questions about whetstones

What is the difference between a file and a whetstone?
The file shapes and removes material, the whetstone is used to polish, fine-tune, and remove burrs.

Do I need several different whetstones?
Yes, preferably a coarse, a medium, and a fine whetstone to cover all stages of sharpening.

Can I sharpen only with a whetstone?
You can remove minor burrs with a whetstone, but for proper sharpening of dull edges, a file is needed first.

Which whetstone is best for competition?
Ceramic whetstones or extra fine diamond whetstones provide the sharpest competition finish.