Hand Sharpening Stones

Traditional natural-stone options, such as phyllite, are still used as sharpening stones. However, various synthetic alternatives have largely taken over the field.

Even in the actual sharpening stones, whetstones and grindstones traditionally used to sharpen knives, chisels, axes and scythes—yes, even swords—there are, alongside natural stone and sandstone options, tools and abrasive surfaces made for example from aluminium oxide.

In addition to sharpening tools, abrasives are needed for finishing the surfaces of almost all kinds of materials. These surfaces can be very demanding in terms of their properties and can also be extensive in size.

Because surfaces have evolved and end results require more, the development of tools has created new needs for the abrasive materials themselves. Different types of grinding machines and devices have developed their own specific abrasive materials—some tools are powered by electricity or batteries, while others are manual.

There are also many more brand- and model-specific grinding products and accessories on the market. Even in hand tools, stricter requirements show up not only in material development but also, for example, in the development of various sanding pads and sanding sponges. Even the most common sandpapers and abrasive sheets are no longer limited to what they used to be—their properties have evolved with selected materials, for instance in terms of flexibility and durability.

When choosing a sharpening stone, sandpaper, sanding belt, or file, it’s essential to understand that after grinding, the final surface treatment usually comes next. The material being worked on, the purpose of the object, the conditions of use, and the substance used for the surface finish determine what kind of sanding is needed and which material the job should be done with.

Some abrasive materials are coarser and are suitable for removing old surface material and for heavier shaping of the surface. Finer materials, in turn, are used for the final finishing required for sanding. Some finishing agents require a rougher surface to achieve optimal adhesion; for most surfaces and substances, it’s enough that the surface is porous—which it naturally still is even after finer sanding.

From the Karkkainen.com online store and Kärkkäinen department stores, you’ll find a huge selection of grinding machines and accessories. The ranges offer plenty of options for both professionals and hobby users, for different budgets—not to mention different brands and models. Welcome to shop at great prices!