Herder kitchen knife blue pierced
Knife handles made of steamed, finely polished wood are rare. Knife handles made of steamed, finely polished apple tree wood are even rarer because apple tree wood, since it dries slowly, is not one of the typical commercial woods. However, it is very easy to work with due to its hardness, weight and durability. Herder in Solingen manufactures these knife handles with rarity value exclusively for Manufactum: even oiled for better surface protection.
Windmühle utility knife. Blue glazed.
The blade is carbon steel, thin ground and blue glazed, with an elongated handle made of steamed apple tree wood, which, as are all wooden knife handles finished at Herder in Solingen, is polished and then oiled: three paring knives with different shaped blades are available.
Windmühle refers to the logo, a windmill.
Solingen Thin Grinding: Nail and Scrape Free.
Windmühlen knives from Robert Herder in Solingen are remarkable not only because of the knife steel (at least 0.75% carbon content and a hardness of at least 56 HRC for the carbon steels), but above all because of the craftsmanship that spares none of the traditional grinding efforts: Windmühlen knives are ground extremely thin. This results in their amazing cutting ability, which is an experience in use. The most elaborate type of grinding is the whale grind, a special type of thin grinding in which the blade is ground tapered towards the back of the knife.
In Solingen, pließten is the name given to the smoothing of the grinding grooves remaining on the blade, i.e. the fine grinding. The most complex stage of this technique is blue finishing. In this process, the steel is ground finer step by step. You can tell that a blade has been blue-peened because it reflects a slightly bluish light.
Longer sharp thanks to higher hardness
The elastic blades of Herder's blue-embossed knives are ground in the Solingen thin section as well as the fuller section. Thanks to the very high hardness of 60 Rockwell (HRC), they retain their sharpness significantly longer.
Because of the high hardness - and because they are ground so exceedingly thin - the blades should not be twisted or even tilted, as this can lead to chipping of the material when cutting under certain circumstances.
Not stainless, but really sharp
The traditional material for knife blades is carbon steel. It is not rustproof, but with a fine-grained structure it can be hardened to a particularly high degree and made extremely sharp. The higher the carbon content, the higher the hardening capacity. These knives owe their high cutting ability to the material in addition to the finish, and their high cutting edge retention to a material-related self-sharpening effect. Each time a cut is made through fruit or vegetables, a minimal amount of material is removed and the blade wears evenly. The knifemaker refers to this as micro-corrosion. In fact, this means that the blade becomes steadily narrower over the years - but always retains its sharp grinding angle. Blades made of carbon steel acquire a dark patina over time, but this in no way negatively affects their quality; on the contrary, it gives them better protection against corrosion.
Carbon steel knives do not belong in the dishwasher. Wipe the knives dry after rinsing and occasionally apply some blade oil. Discoloration may occur on the blade material. However, this is not a sign of inferior quality, but only indicates the rather high carbon content in the material. In case of flash rust, the use of the rust eraser is recommended. A resharpening can be done with the sharpening steel.
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