Set of 4, 5 or 6 CBN sharpening stones 150x12 mm/ 6″x0.5″, metal-resin, Poltava

Description: Set of 4, 5 or 6 CBN sharpening stones, metal and combined(metal-resin) bonds, for curved blades, Poltava plant of diamond tools, 150 х 12 х 7 x 3 Length: 150 mm = 6 inchWidth: 12 mm = 0,5 inch CBN thickness: 3 mm = 0.12 inch Blank thickness: 4 mm = = 0.16 inchTotal thickness: 7 mm = 0.28 inch Trademark: Aldim. These next generation stones were developed on the basis of our experience in sharpening business: - solid support plate (thicker aluminum blank: 4 mm vs competitors' 3 mm);- appropriate bonds (selected, depending on grain size)- combination of long life, delicate sharpening, and excellent performance of combined (metal-resin) bond. Appication: metal and combined (metal-resin) bond CBN sharpening stones for sharpening of curved (s-shaped) blades Concentration 100%.Flat solid block on aluminum blank, grains are distributed evenly across the stone. Material: CBN - cubic boron nitride. It has the best cost/productivity ratio for processing of steels, comparing to diamond and cheaper stones, they are similar in qualities to Japanese wet stones, but have ten times longer working life. CBN is a generic name, there are also other names of this material, depending on manufacturer: borazon, elbor. Sharpening stones in sets (grain size format: Micron(UA) = ANSI(US) = FEPA(EU) Set of 4 stones:1. 100/80μ = 140/170 = D107, metal bond M2-01 - rough sharpening2. 50/40μ = 270/325 = D54, combined (metal-resin) bond BP50 - fine sharpening3. 20/14μ = 1100 = M20, combined (metal-resin) bond BP50 - polishing4. 7/5μ = 3000 = M6.3, combined (metal-resin) bond BP50 - polishing Set of 5 stones:1. 100/80μ = 140/170 = D107, metal bond M2-01 - rough sharpening2. 50/40μ = 270/325 = D54, metal bond - sharpening3. 28/20μ = 650 = M25, combined (metal-resin) bond BP50 - polishing4. 14/10μ = 1500 = M16, combined (metal-resin) bond BP50 - polishing5. 7/5μ = 3000 = M6.3, combined (metal-resin) bond BP50 - polishing Set of 6 stones:1. 160/125μ = 100/120 = D151, metal bond M2-01 - rough sharpening2. 80/63μ = 170/200 = D91, metal bond - sharpening3. 40/28μ = 550 = M40, combined (metal-resin) bond BP50 - polishing4. 20/14μ = 1100 = M20, combined (metal-resin) bond BP50 - polishing5. 10/7μ = 1700 = M10, combined (metal-resin) bond BP50 - polishing6. 5/3μ = 4000 = M4, combined (metal-resin) bond BP50 - polishing PreparationStones in these sets do not require preparation and are ready to use out of the box, information below is just for consideration. Stones with grits finer 3 microns either may require preparation (polishing) with SiC powders, or they will be self-polished after sharpening of 30-50 knives. Then they will be of gold color and work well. The image below shows surface of 0.5/0 stone under microscope, before and after polishing with SiC powders. Use and cleaningUse any comfortable oil (baby, olive..) to prevent glazing. If glazed - clean with alcohol and toothbrush. Maintenance is only needed every year or two. In 1-2 years you may need to flatten stone:-Metal bond stone: polish it with SiC powders (grain size selection list below), or use Ferric chloride (FeCl, video below): - 10 mins setting in 25% mixture (25 gr FeCl per 75 gr of water), - 10 mins polish movements (carefully draw "8") on glass plate. -Combined and resin bond stones: polish them with SiC powders. Selection of SiC powders for dressing of sharpening stonesStoneStarting gritFinishing grit500/400 μ = 35/40= D501F16 (1230 μ)F24 (745 μ)400/315 μ = 40/45= D426F16 (1230 μ)F46 (370 μ)315/250 μ = 50/60= D301 F24 (745 μ)F46 (370 μ)250/200 μ = 60/70= D251F24 (745 μ)F60 (260 μ)200/160 μ = 70/80= D213F36 (525 μ)F60 (260 μ)160/125 μ = 100/120= D151 F46 (370 μ)F80 (180 μ)125/100 μ = 120/140= D126 F60 (260 μ)F100 (129 μ)100/80 μ = 140/170= D107F60 (260 μ)F120 (109 μ) 80/63 μ = 170/200= D91 F80 (180 μ)F150 (82 μ)63/50 μ = 230/270= D64 F100 (129 μ)F180 (69 μ)50/40 μ = 270/325= D54 F120 (109 μ)F220 (58 μ)40/28 μ = 550= M40F150 (82 μ)F240 (46 μ)28/20 μ = 650= M25 F180 (69 μ)F320 (30 μ)20/14 μ = 1100= M20F240 (46 μ)F400 (18 μ)14/10 μ = 1500= M16 F320 (30 μ)F400 (18 μ)10/7 μ = 1700= M10F400 (18 μ)F600 (10 μ)7/5 μ = 3000= M6.3 F600 (10 μ)F800 (6,7 μ)5/3 μ = 4000= M4F600 (10 μ)F800 (6,7 μ)3/2 μ = 6000= M1.5F800 (6,7 μ)F1200 (3 μ)2/1 μ = 10000F800 (6,7 μ)F1200 (3 μ)1/0 μ F800 (6,7 μ)F1200 (3 μ)0.5/0 μ F800 (6,7 μ)F1200 (3 μ) Please review stone flattening/revitalization video with FeCl below. CBN metal bond stones flattening and revitalization Video will open in a new window Using the eBay App? Paste link into a browser window: [isdntekvideo]

Price: 255 USD

Location: Poltava

End Time: 2024-08-17T13:09:39.000Z

Shipping Cost: 0 USD