Well made stone. Good quality. The flattening stone was a welcome bonus. The 3000 grit side is perfect for initial sharpening. A caution on the 8000 grit side - It is not remotely close to 8000 grit. It seemed closer to 4000 grit of a quality Japanese whetstone. I purchased a 6000 grit King S1 stone for final polishing. Stay away from the cheaper King 1000/6000 KW65 combination whetstone. That seems to use plastic binder which literally permanently clogs the 6000 grit side.
Natural Japanese waterstones are still available, though nearly all quarries are closed. However, there still exists a large quantity of mined stone. Quarries containing the finest stones have all but been exhausted. If one were to be found, it would cost a fortune. Even so, similar, less than perfect stones that are currently produced can still fetch well in excess of €400!
We're in luck, because Christopher Schwarz wrote an article in which he compiled a list of sharpening products arranged by relative fineness, based on the abrasive sizes in microns. Note that he includes a disclaimer that he is only working from the advertised grits, not the actual grits. As Graphus pointed out, the same type of stone in the same grit from multiple manufacturers, and even from the same manufacturer, can vary. However, this is largely inconsequential because it isn't necessary to move through every successive grit when sharpening.
As a professional culinarian who uses expensive knives and tools- even in my everyday life, this sharpening stone has become a “must have” in my arsenal. Whether I am restoring an older, well-worn blade back to its glory or simply keeping up with the everyday wear on my go-to knife, the 3000/8000 grit sharpening stone gives my knives the edge in the kitchen (all puns intended;)).
But if you start mixing brands or systems, you can get in trouble. Here’s an example: Say you want to use a soft Arkansas oilstone as your coarse stone and an extra-fine India (aluminum oxide) stone to finish things up. Well good luck , both of these stones are the same grit (22 micron). Your edge won’t improve when you move to the extra-fine stone.
The word “Novaculite” is derived from the Latin word “novacula”, which means “razor stone” and is essentially a metamorphic, recrystallized, variety of Chert composed mostly of microcrystalline quartz that is found in the found in the Ouachita Mountains of Arkansas and Oklahoma and in the Marathon Uplift of  Deposited in the Devonian Period and the early Mississippian Subperiod some 410 to 325 million years ago and subjected to uplift and folding during the Ouachita orogeny of the Atokan Epoch (early Pennsylvanian Subperiod), Novaculite is a very tough stone that is resistant to erosion and thus, the various layers of Novaculite stand out as ridges in the Ouachita Mountains. Thus, due to both its availability and its composition, it has been mined since ancient times for use as arrowheads and spear heads as well as in more modern times for use as sharpening stones.
Sharpen your dulling knives and other tools quickly and easily with a choice from the best knife sharpener selection at Academy Sports + Outdoors. The handheld knife sharpeners feature large, ergonomic handles that generally fit either hand safely and securely, and finger guards that are full length to protect your fingers. The sharpening blades are often made of diamond-honed tungsten carbide for quick restoration of extremely dull blades or ceramic rods for a polished finish. A handheld knife sharpener tends to be small and portable, perfect for use out in the field when you need a professional knife sharpener to sharpen your hunting or fishing blades.
The newly designed dual-sided combination whetstone from Fallkniven features a super fine white ceramic stone (0, 1 micron) with a grit of 1400 to 2000 and the dark grey ceramic stone is made of synthetic sapphires (1 micron) and has a grit of 800-1000. There is no need to add any oil or water, just lay the blade on the stone, raise the blade's spine and deburr your blade on the grey side until it has a razor-sharp edge and then use the smooth white side to get a nice polished edge.
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