DMT FWCX Double Sided Diafold Sharpener Coarse / Extra-Coarse

Qualitativ sehr gut. Langzeitbewertung folgt.

Works as intended.

If you sharpen your knives along the existing factory edge angle, eventually you might find that the blade seems to refuse to get really sharp anymore. That experience is more likely if the factory edge came with a relatively obtuse angle, as is the case with some of my pocket knives. That’s because repeated sharpening along such edge angle is liable to make the cutting edge even more obtuse. Since I strongly prefer to keep my knives very sharp, such changes in the edge angle and the consequent loss of sharpenability initially were disconcerting to me, to the extent that I almost wrote off the knives in question as lemons in terms of heat treat. Eventually it dawned on me that such blades may need to have their cutting edges reprofiled into a more acute angle. That’s why I am glad to have found this sharpener: I use the extra coarse side to narrow the “shoulders” of the cutting edge and then the coarse side to smooth out the surfaces of the edge, and this sharpener with its diamond coating does a very effective job at this task (although patience may be required as many strokes on each side of the cutting edge may be needed to change its angle). Once the reprofiling is done, my normal means of sharpening can take over and bring the screaming sharp edge back to life. Using this approach I have been able to revive 4 or 5 knives in my collection, plus my wife’s kitchen cleaver, to their former glory. I also like the broad surface of this sharpener as it is less likely to slide off the tip of the blade - which may dull such tip - at the end of each sharpening stroke (in contrast to, for example, Spyderco’s Sharpmaker rods, which are much narrower and a bit harder IME to control near the tip of the blade).

Estos calibres son demasiado abrasivos... no los usen para hojas delgadas a menos que sepas lo que haces. Recomendables en jardinería, carpintería, entre otros. Donde necesitan afilarse tijeras, machetes, formones. Donde uno debe cortar de golpe. No tiene caso filo de rasurado ya que de un golpe, lo amellas. Pueden hacerse nuevos biseles en cuchillos. Pero insisto. Debes saber lo que haces. Es una herramienta casi imposible de conseguir en ferreterías.

Ist die Schneide sehr unscharf, sollte man vor dem Einsatz der roten ( 25 micron) und dann grünen (9 micron) Schleifkörper erst einmal kurz den schwarzen Schleifkörper mit 60 micron und dann den blauen Schleifkörper mit 45 micron nehmen. Zum Abziehen dann noch den 3-micron-Stein oder das Abziehleder mit 9 micron- bzw 3 micron- Diamantschleifpaste führen dann zu der gewünschten Tomaten- bzw. Papierschärfe.