Boride CS-HD Series 6" x 1" x 0.25" Silicon Carbide Sharpening Stone with Aluminum Mounting for Edge Pro 220 Grit

It’s like the old sharping stones they use to get from the coal mines they were a silicon carbide stone the do an excellent job sharping knives, scissors and other cutting instruments that are made of hard metal ! Not just only that they were good you can use it time and time again an there is no big loss of stone unlike aluminum oxide stones they were out fast and seem to be like a lot grainer and in some cases they tind to wear the blade out taking more material off then what’s really needed to sharpen the blade !

I use the 1x6 inch Sic stones for stone in hand convex sharpening on clients knives they send for sharpening and want a convex edge. I also use the gritomatic sic bench stones and have for years, I love them! On simple steels like 10xx carbons and more complex but low alloy stainless steel like 4116, vg10, bd1n, 154cm, ats55 etc etc or fine grained low alloy steel like sandvik 14c28n, 13c, 19c27, aeb-l, nitroV etc etc this Sic stones are AWESOME, I really love them in the 1x6 for stone in hand convexing or the bench stones for most sharpening. The vast majority of kitchen knives I sharpen for customers are done on the 3x8 sic benchstones from gritomatic (I'm pretty sure that Boride makes the benchstones for gritomatic) or when it's out doors knives in steels like listed above and the customer wants a convex then I use the 1x6s. The course grits cut low alloy steels pretty efficiently and quickly and as you move up grit the stones leave such a consistent and refined scratch pattern that it's really hard to explain. The consistency of abrasive particle size in the Sic stones is truly impressive, they leave some of the most consistent scratch patterns of any stones I've ever seen... The edge feel that the sic stones leave on those low alloy steels or carbon steels is AMAZING, these stones leave a very refined but aggressive micro serration pattern that few other stones are capable of so you get great fine edge stickiness but you also get great tooth/bite even at higher grit finishes. If you like a nice keen fine edge that also has some aggression to it then the 1k sic is fantastic to finish on for most kitchen knives or the 2500 if you want a little more push cutting keenness at the expense of some of the aggression. On knives that the chef is cutting delicate meats such as raw fish for example I would finish that knife on the gritomatic sic 2500 bench stone and finish with a few passes on a 1um diamond strop and finish on a few passes on a CBN strop at 0.1 micron and that's gonna literally just fall thru raw fish while still having good aggression for cutting more fibrous things... For most kitchens the sic 1000 is the perfect stone inho. It cuts fast enough that for resharpens and touch ups the 1k is a perfect one and done stone as it will cut fast enough to deal with minor edge damage during a resharpening and it's a perfect all around finish for all your kitchen knives.. the 600 is also a fantastic one and done stone! Now that is assuming that you don't have much damage to the apex or the 600 or 1000 is to find to take care of it but most knives in the kitchen if decently cared for won't have much if any apex damage and will just be blunting/rounding over and for that the 600 or 1000 make for a perfect sharpen and finish on that one stone.I have a full set of both the bench stones and 1x6s and when I wear thru them I will absolutely buy them again. In fact I have worn out the 80 grit and the 150 grit benchstones (the courser stones wear much faster) and bought replacements like 6 months before I actually needed them because I was scared they would be out of stock when I needed them... So that tells you how good they are! I was not willing to be without them in case they went out of stock so I bought ahead of time. I'm a very well known professional free hand sharpener, I use many many stones from 600 dollar a piece super vitrified diamond stones down to 30 dollar alumina stones and all in between and these SIC stones are some of my most used stones... Get you a 600 and 1000 of if you just want one I would probably suggest the 600 as the best all around one and done for most people. You will love the stone it lasts well and does a fantastic job and like I said the edge quality is hard to beat, the blend of keenness and bite these stones leave in the edge is something that few other stones are capable of.One thing about these stones is they will load up in the finer grits if you do not use water and dish soap, a little tiny bit of dish soap is all that's needed just enough to break surface tension of the water. This will seriously help with the load up, also I will tell you that gummy low quality steels with terrible heat treat quality will load these stones up badly, personally if the ate l feels extremely stone then I won't use these as the load up will be bad. So long as the cutlery is of decent quality you will be fine but if it's like dollar store knives or those 5 dollar Wallyworld specials I would keep those off my SIC stones it's not worth the bad load up that you will have to do a lapping on the stone to clean it all up and it just wears your stone at a undue rate. If it's good steel with a good heat treat then it will not load up and will cut cleanly! If the steel is gummy you will notice it right away you will quickly feel the cutting slow down and the stone will get feeling like it's getting smoother and smoother that is the stone glazing over from getting gunned up and no longer releasing abrasive to cut. You will feel it quickly if in like 10 strokes you feel the stone feeling like it gets smoother and smoother with each pass stop, clean the stone before it gets to gummed up that you have to do an undue lapping. If the steel is good and the hardness is up around 54 HRC at the minimum then you will not have the loading up problem and the stone will remove material at a good rate and so long as you do your job holding a consistent angle you will be left with fantastic edge quality and a stone that will last you a very long time and service you very well!

Good stone for sharpening high hrc or high carbide steels. I've used the CS-HD stones on everything from S30V to Rex 45 and they work great, cheaper than diamond stones and they get the job done.

I'm don't have the money for a flat grinder for my straight edge pieces of stained glass I work. This does the trick for a fraction of the cost.

I used the 400 and 1200 grit silicon carbide stones to reprofile several D2 steel folding knives on an edge pro style sharpener. The 400 removed steel fairly quickly and left a toothy scratch pattern. Used carefully, the 400 by itself can make a knife quite sharp. Proceeding to the 1200 leads to an extremely sharp edge. Both stones are excellent for the price.

Works great!

I got a 1200 grit one for finishing steps on my blades. The stone has a great feel, and grit uniformity, However, it did not come completely flat, and there were visible circular scuff marks on the surface from manufacturing. I used flat thick sheet of glass and 1000 grit sandpaper on it with water, to level the stone. Now its working great.

Good item