PDT (PDTools) Metallic CBN Stone

CBN stone on copper-tin (Metallic) bond of Poltava Diamond Tool Factory. Monolayer bar on a blank for Hapstone sharpeners The stones are on the new M1001 binder - improved binder of 2021, in which nickel, titanium is added, which allows the stone to work longer and less greasy!   📍The grain size in JIS, indicated on the website, may slightly differ from the actual grain size due to different batches that are officially provided by Diamond Poltava Tools. (PDT).📍 The grain size in microns(µm) is 100% identical.   CBN stones are the most productive, efficient, and durable among abrasive stones. High performance and efficiency is achieved by using 100% diamond concentration, and durability is due to the metallic Copper-Tin bond that holds the CBN grains firmly in place while working.  What is the difference between CBN stones and diamond stones? And why is elbor better/more expensive? The fact is that CBN, unlike diamond, works much softer and does not leave such deep "scratches" on the RK in the process of work. This is possible because of the difference in crystal shapes. In diamond, the crystal structure is tetrahedral (less number of cutting edges + sharper angles of cutting edges of the crystal - hence such an undesirable "aggressiveness" of diamond), and in elbor the crystal structure is octahedral (more number of cutting edges + less sharp angles - hence greater productivity and softness of work). Characteristics: Purpose: for all types of work, from rough sharpening to polishing; Abrasive: CBN Bonded : copper-tin (M1001); Diamond concentration: 100%; Size of the "working" surface: 150 x 25 mm; Layer thickness: 3 mm; Bar size with blank: 160 x 25 x 6 mm; Blank: aluminum; Chamfer: made; Prepared for work: ready; Engraving on the blank: official engraving of Poltava diamond factory; Packing: firm blister, passport; Coolant: oleic acid, oil or WD-40. Hapstone is the official representative of PDT - you can be sure that you are buying original PDT products! Features: PREMIUM series stone are finished to the same thickness between 3.0-3.1mm and chamfered. Have a record service life of up to 4000 sharpening cycles and more. Elboron stones do not need to be prepared before use, the bar is immediately ready for work. Care: The stone is designed for manual sharpening of knives, hazard razor blades, chisels, etc. The stone is restored by salting with pumice or silicon carbide powder on a flat surface.