Spyderco CBN Benchstone Double Sided Sharpener Cubic Boron Nitride

Product Information

There are several reasons that CBN is worth considering for your next sharpening stone. Most important is that CBN is harder and has greater abrasion, thermal and chemical resistance than either synthetic diamonds (though less so than natural diamonds), silicon carbide, or aluminum oxide. Unlike other bench stones, you can use it dry (without any lubricants). It never requires flattening (though in all fairness neither do diamond stones) and it will sharpen any tool steel, including the S90V produced by Crucible." Kmesharp.com sells diamond "Gold" stones from 50 grit to 1500 grit, then diamond lapping films down to .1 micron, as well as kangaroo leather strops and CBN emulsion down to .1 micron. They are expensive but will do the job.

The Al Oxide and SiC abrasives are softer than the vanadium carbides and will wear away the steel surrounding the carbides resulting in chunks of vanadium carbide tear out. Only diamond and CBN are hard enough to actually abrade and sharpen the vanadium carbides. CBN offers excellent performance in sharpening knives of any steel. Due to its high resistance specs, CBN can be used dry without lubricant. This makes CBN the cleanest of the available sharpening stones. Form a micro bevel with clean DMT Extra Fine bench stone to remove the burr,,,, final light passes on diamond leather to refine the apex. I have used the DMT and the Gold Series for the KME and these are much better,the problem everyone always forget's or just does not know about diamond stones and plates is that the diamond's are just held in place by some form of solder. All I can say is these stones should be called for a brand name Rabid Piranha's because that's the best way I can describe them and to call them just Piranha's would not do justice as to how fast they cut.

Silky F180 Folding Pruning Saw (143-18) Large Teeth - 180mm Blade, Red and Black Handle

Cruwear is an easy to grind and sharpen steel. Your current stones will most likely handle it fine. S110V is a much more difficult to grind steel and will require some more heavy duty abrasives to assure you are cutting the steel and not burnishing it. Art Supplies Artist Paint & Pencils Paint Brushes Craft Tools Stamps & Stencils Cutting Tools & Mats Resin & Accessories Craft Books All Craft Shop Metallic CBN stones may have tone imperfections. Metallic CBN may become darker over time due to natural metal oxidizing, it does not affect the sharpening.

Poltava Metallic CBN Stone for Hapstone Edge Pro TSProf Sharpeners HPCBN ***Grits ranging from 800 grit to 8000 grit. Select from the drop down above*** ***ALL grits are JIS. See Table Below*** CBN's qualities include high levels of high hardness, strength, abrasion resistance, and thermal and chemical resistance. These characteristics exceed the values of synthetic diamonds and conventional abrasives such as silicon carbide and aluminum oxide. In particular, CBN's high thermal stability and chemical resistance make it suitable for sharpening in conditions where synthetic diamonds are not normally employed. KME CBN emulsions are extremely simple to apply and use too. No heating or softening required. No need to work the compound into the strop either. Just apply a single drop to the surface of the strop, spread it out evenly, and let it dry while you sharpen your knife with the stones. Each bottle contains approximately 120 drops and each drop will micro-hone at least 3 knives. That’s about 360 knives minimum per bottle. (That’s a lifetime supply for most of us!) Cubic Boron Nitride (CBN) is second only to diamond in hardness and is similar to man made diamond. It is an exceptional finishing and polishing micro-abrasive. KME brand CBN emulsions are specially formulated by sharpening stone and micro-abrasive expert Ken Schwartz and are available in grits ranging from 4 micron (4000 grit) down to an incredible mirror polishing .1 (1/10th) micron size (160,000 grit).CBN offers high performance, sharpens any steel, has a low wear rate and little loading, creates no mess and makes no unwanted grooves. The catch is the price – it’s expensive. Start by reading this thread carefully with regard to sharpening your super-hard steel folders using the Spyderco ceramic rods. There's a ton of useful info in this thread. The basic takeaway: the ceramics in the SM are not the best option for sharpening your super steels, though they will probably work in the short run. CBN’s qualities include its high levels of high hardness, strength, abrasion resistance, and thermal and chemical resistance. These characteristics exceed the values of synthetic diamonds and conventional abrasives such as silicon carbide and aluminum oxide. In particular, CBN’s high thermal stability and chemical resistance make it suitable for sharpening in conditions where synthetic diamonds are not normally employed. One of the most important steps in sharpening is burr removal. With plain carbon steels this is easy,,, the real difficulty is with the high vanadium steels and high Cr content steels. These steels form a very small and tough to remove burr.

The 4 micron CBN emulsion used in conjunction with one of our new Kangaroo leather strops is quite possibly the single most impressive sharpening accessory we’ve ever used and every single person who’s tried it agrees. One kangaroo strop and one bottle of 4 micron CBN emulsion are “must have” items! Assuming the bond strength is not excessive they will renew themselves with fresh, unworn (and most importantly SHARP) abrasive particles which continue cutting rapidly. Once your edge has all the damage removed and the actual apex is no longer visibly reflecting light -- then you know that you have gotten the apex thin enough to apply a micro-bevel at apex.The Sharpmaker and Spyderco ceramic bench stones are excellent and I have used them for almost 30 years. Be careful not to press to hard and use too long or you will easily form a tough small burr, then complain it does not work very well on the newest tool steels. The problem with them being soldered in place is that when you are sharpening the diamond's are so hard they dig and hook into the steel and get torn out when you sharpen and then you do not have many diamonds left on the diamond stone.Where as with Metallic Bonding the CBN stone's I have the CBN particle's are better anchored in and are much harder to tear out. The main advantage of natural sharpening stones is that in general they last longer than synthetic sharpening stones. In addition, natural sharpening stones slowly remove material. These stones sharpen slowly which means that the end result is a little more refined and controllable. And you sharpen your knife on a completely natural product. That could also be an important advantage to many. The biggest disadvantage is that sharpening takes a little longer than when you use synthetic sharpening stones. And no natural sharpening stone is the same. The grain size and the coarseness of the stone cannot be accurately determined per stone. That is why an estimate is given of, for example, 6000 to 8000 grit. Especially when it comes to the higher grain sizes this isn't something you prefer. Ceramic sharpening stones All rights reserved. All product names, art and text herein are the property of Spyderco, Inc. and may not be reproduced in part or whole without the sole written permission of Spyderco, Inc. Poltava Metallic CBN Sharpening Stones are used for sharpening knives using Hapstone, TSProf and Edge Pro sharpeners. CBN (Cubic Boron Nitride) is the second-hardest material after diamond. Metallic CBN stones utilize copper-tin alloy bonding for high endurance and low wearing rate.