CBN Sharpening Stone 8 inch Double-sided Whetstone Knife Sharpener 8” x 3”,for Sharpening High Speed Steel,Special Steel,for Both Household and Professional Use (400/1000 Grit)

Transform your blade maintenance routine with this premium 8-inch double-sided CBN sharpening stone. This versatile whetstone features two distinct grits - 400 for initial sharpening and 1000 for refined finishing - making it perfect for both repair work and precision edge honing. The generous 8" x 3" surface area provides ample workspace for various blade sizes. Specifically designed for high-speed steel and special steel applications, this professional-grade sharpening stone delivers consistent results whether you're a home enthusiast or professional craftsperson. The durable CBN (Cubic Boron Nitride) construction ensures long-lasting performance and maintains its flat surface over time, unlike traditional stones that can develop uneven spots. Experience the satisfaction of achieving razor-sharp edges on your knives and tools with this essential sharpening solution. Quality control ensures stone flatness: Precision Ground Flatness to +/-0.0004 inch (0.01mm) Will never become dull. FAQ: Q:What is the significance of flatness? A: With an ultra-high flatness of ≤0.01mm, long-edge knives can perfectly fit the flat surface of the sharpening stone, thus ensuring that even the narrow, elongated cutting edges are properly ground. This is a fundamental condition for high-end tool sharpening,making it more suitable for professional sharpening markets such as workshops and clubs. You can also use this CBN sharpening stone to hone your conventional whetstones and grinding wheels. Q: Why choose CBN sharpening stone instead of diamond sharpening stone? A: This is determined by the inherent properties of the bond. Electroplated bond is different from resin bond and metal bond. In electroplated bond sharpening stones, the abrasive grains are not encased in the bond but exposed outside. Without the buffering and heat-conducting substances like bond between the grains, high temperatures are more easily generated. If diamond is chosen as the abrasive material,the carbon element in the diamond will react with the iron element, and the high temperature generated will affect the quality of the tool and cause the diamond stone to lose its sharpness, becoming progressively less sharp while there is no such problem with CBN as abrasive material. So for electroplated bond sharpening stones, it is better to use CBN as abrasives. While in the resin bond and metal bond sharpening stones, the abrasive material is encased in the bond and does not generate high temperature,so both diamond and CBN can be chosen as abrasive material,but their sharpness and flatness are far inferior to those of electroplated bond sharpening stones. Q: Is water or oil required during the sharpening process? A: Just spray some water on the CBN knife sharpening stone. Q:After using the stone, dark areas appear on its surface.Does this mean the CBN have worn off? A: No, the dark areas are dried dirt from sharpening, not a sign of the CBN wearing off. These marks don't affect performance and can be left as is.For minor marks, use an eraser.For stubborn stains, clean with Bar Keepers Friend and air dry fully. Q:Should l use high pressure when sharpening with this CBN stone? A: Avoid applying excessive pressure when sharpening,especially for the fine grit,like 1000#,the knife can pierce the CBN working layer. Q:How long does it last? A: The lifespan depends on usage and grit,the hardness of the materials being sharpened, and maintenance. With proper care,for the coarse grit, it can last many years, even for those sharpening 5 to 10 times a week, Regular cleaning and light pressure extend its durability. Q:How to clean the cbn stone? A: To clean the stone, gently wipe the surface with a dry paper towel. If particles are clogged, use a rubber eraser or nylon brush to remove them. This will restore the stone to its original condition. Q:What is the cause of the rust and how can I deal with it? A: The base of this product is steel coated with nickel and will not rust. Any rust is caused by iron filings left on the stones surface that oxidize if not cleaned. Use Bar keeper Friend powder to clean it and ensure the stone is fully air-dried. Q:Is it normal to see scratches on the surface after sharpening with this CBN stone? A: Yes, it's completely normal. The scratches are just typical signs of use and do not affect the performance of the CBN stone.

• ULTRA-HIGH FLATNESS(≤0.01mm): Long-edge knives can perfectly fit the flat surface of the sharpening stone, thus ensuring that even the narrow, elongated cutting edges are properly ground. This is a fundamental condition for high-end tool sharpening,making it more suitable for professional sharpening markets such as workshops and clubs. You can also use this CBN sharpening stone to hone your conventional whetstones and grinding wheels.
• WHY CBN NOT DIAMOND: It is determined by the inherent properties of the bond.In electroplated bond whetstones,the abrasive grains are not encased in the bond but exposed outside.Without the buffering and heat-conducting substances like bond between the grains,high temperatures are more easily generated.If diamond is chosen as abrasive,the carbon element in the diamond will react with the iron element,and the high temperature generated will cause the diamond stone to lose its sharpness,but there is no such problem with CBN as abrasive material.
• DUAL-SIDED DESIGN: Our CBN sharpening stones with 400/1000 grit combination are suitable for both rough sharpening and fine honing of high-speed steel and special steel tools. Two distinct grit levels allow for progressive sharpening from coarse 400 grit(45 micron) to finer 1000 grit(15 micron) finish
• VERSATILE USE: Our CBN Whetstone Knife Sharpeners are suitable for both household and professional applications, perfect for maintaining knives, tools, and cutting implements
• CBN CONSTRUCTION: Made with premium Cubic Boron Nitride abrasive material for superior sharpening performance and durability
• DIMENSIONS: 8 inches long by 3 inches wide CBN sharpening stone provides ample surface area for various blade sizes
• DURABLE & FAST: CBN will not become dull over time like diamonds do.The CBN are electroplated onto a steel base of 0.3 inch thickness,up to 5-10 times faster sharpening than conventional sharpening stone.