SUEHIRO is a small family business that has been on the market for several decades, with an impeccable reputation and typical Japanese dynastic succession of generations. However, from the majority of Japanese manufacturers of artificial abrasives, who prefer to exploit the traditional technologies of water stones on magnesia bonds, SUEHIRO clearly distinguishes an innovative approach to business and the dynamic implementation of non-trivial technical solutions. The result of this multifaceted approach is a fairly large variety of different series of synthetic stones manufactured by SUEHIRO, designed to process a wide range of steels, for both professional and amateur use.
One of the latest innovations from SUEHIRO is the NEW CERAX series, which has a phenomenally narrow range of abrasive grain sieving and, as a result, a high density and uniformity of abrasive particles on the working surface. In the development of the latest series of sharpening stones, SUEHIRO paid special attention to the microstructure of the abrasive stone bond material. SUEHIRO managed to obtain an ultra-thin and at the same time extremely homogeneous capillary structure of the inter-abrasive space, resistant to negative effects caused by impregnation of the stone body with water that is uneven in thickness (a change in the geometry of the bar caused by non-uniform mechanical stresses, followed by possible cracking after a series of wetting and drying cycles). The thin capillary structure does not allow the liquid to penetrate deeply into the bar, and the uniformity of the capillary clearance does not create differences in the depth of impregnation and the accompanying mechanical deformations.
Thus, the stones of the SUEHIRO NEW CERAX series are less whimsical than most water stones to changes in humidity and temperature and do not distort the flatness of the working surface of the stone during soaking. SUEHIRO NEW CERAX differs from the previous series in a narrower range of abrasive grain sifting, respectively, the grain density in the bars is higher and it is more uniformly distributed over the surface.
A bunch of SUEHIRO NEW CERAX stones has an average rigidity and is declared as ceramic (in fact, even the first four letters in the name of this series, which coincide with the first letters of the English word ceramic, indicate this). However, like most modern Japanese abrasive stones, a complex bond is still used, in this case - ceramic plus magnesia, which positions the stones of the SUEHIRO NEW CERAX series as clearly water-based, requiring soaking before use and not working with oil coolants (or rather, neither with anything other than pure cold water). The high grain density (the abrasive used in the SUEHIRO NEW CERAX series - aluminum oxide) in the stone creates a completely unique tactile response when sharpening, combining the feel of working on a relatively hard stone with the high metal removal rate inherent in soft bonds.
Stones of the SUEHIRO NEW CERAX series belong to sharpening stones of the middle price category and are recommended for use by both professional sharpening professionals and beginner sharpening enthusiasts. But this does not diminish the merits of this unique series. On the contrary, SUEHIRO NEW CERAX stones are so easy to use and unpretentious in maintenance that they immediately gained both the well-deserved love of beginner practitioners and the interest of professionals.
Another interesting feature of the SUEHIRO NEW CERAX series is that these stones are equally capable of working on most steels that can be encountered in the knife industry - including chromium-containing (stainless), high-alloy (quick cut), carbon steels, as well as powdered steels.
It is also impossible not to note the exceptional thoughtfulness of the design of the stone holder (simultaneously being a cover for storing the stone and a reservoir for soaking it), which ensures convenience and comfort in work. The storage case also serves as a compact soaking container, and when used as a stand, the stone is securely fixed in the grooves of the case. The case-holder is a transparent container with rubber feet-pads, which have a very good grip even with a wet flat surface, which prevents the structure from slipping during sharpening. During storage, the stand provides a gap between the stone and the case, which is necessary for ventilation of the stone surface.
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