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The Fällkniven DC4 is a combination diamond/ceramic whetstone that handles all your sharpening needs. It consists of a fine diamond stone (25 micron) and a special ceramic stone made of synthetic sapphire.
The Fällkniven DC4 is a combination diamond/ceramic whetstone that handles all your sharpening needs. It consists of a fine diamond stone (25 micron) and a special ceramic stone made of synthetic sapphire.
These materials keep their flat shape even as they wear, which is important when sharpening a knife. As they are among the hardest materials known, they will sharpen any steel, even extremely hard powder steels. No lubrication is needed, but clean the stones now and then with warm water and liquid soap. They may feel coarse at first but become smoother with use. A leather pouch is included.
Facts:
Diamond 25 µm and ceramic (synthetic sapphire)
Dimensions 7 × 32 × 100 mm
Weight 65 g
Leather pouch included
There are several good ways to sharpen chisels and plane irons: water stones, diamond stones, oil stones and sharpening machines such as Tormek. All give sharp edges, but they differ in speed, maintenance and price.
A honing guide makes it easier to keep the same angle every time. The most important thing is to find a method you enjoy and use often. The guide helps you choose.
Which water stone you need depends on how dull your edges are and how fine a finish you want. A common setup is a coarse stone around 1000 grit to shape the edge and a fine stone around 5000–8000 grit to polish it. For chipped edges you need a coarser stone too.
Water stones wear unevenly and need flattening regularly. The guide explains grits, brands and flattening.