Spyderco CBN 400 Mesh Dual Grit Edge | 40 mm Manila Rope | ANDE Knife Test

I can't believe it happened again! The Spyderco CBN 400 Mesh is SO aggressive! Is 400 Mesh CBN by Spyderco the new gold standard for dual grit edges?!
Also check out my tutorials on dual grit sharpening.
What's a dual grit edge, you may ask?
Think: high performance aggressive knife edge!!! This method for versatile razor sharp knives is fast, easy, and leads to edge retention increases of up to 50% in some tasks! Watch my tutorials to quickly learn innovative hand sharpening techniques with whetstone, diamond plate, & honing strop.
The dual grit method is a specific method for sharpening one side of the edge coarse and the other fine - an updated tutorial is below:
• CPM MagnaCut Dual Grit...
And the results have been observed by independent testing:
• You Won't Believe How ...
If you're curious about the science behind the edge mechanics, check out this scienceofsharp.com article in which Dr. Todd Simpson analyzes the effect:
scienceofsharp.com/2021/06/15...
Please consider supporting me on Patreon if this helps you,
www.patreon.com/thehomeslice?...
Whether your passion is bushcraft knives, survival blades, hunting & fishing knives, edc knives, or kitchen knives - this method could revolutionize the way you sharpen your knives and make your edge last longer!!!
#thehomeslicesharpening #dualgritedge #dualgrittest

[@michaell397]

I am currently testing a product from the Diamond and CBN Manufacturing company in Ukraine. It specializes in precision Machining and is very well known in Europe. They are the world leader in precision machining applications with these abrasives. I am a retired knife maker and do a lot of testing for sharpness in high vanadium steels. I have CBN stones from them ranging from 100 grit thru 3000 brit in the JIS scale. Never have I witnessed such crispness in an edge. The results are unreal. The speed they work are mind boggling as well. So far, I have had the longest lasting edges in tough materials with high aggression with the 550a dn 640 grits with only the lightest of stropping with 1 micron diamond paste. They are just now entering the U.S. Market with their very unique metal matrix diamond and CBN Stones. No loading, and no need to flatten until many thousands of sharpening are the results of this uniquely made stone. Their products are available on the Bay under USA Market Sharpening Stones. KnifeMaker/Retired after over 47+ years in the Craft

[@homeslicesharpening]

I was looking into these stones recently - please keep me posted on the results they looked awesome!!!

[@julesgardet659]

I dropped my knife while cooking, luckily it fell in between my toes, got just a small cut. Lesson learned, never barefoot when handling knives. ☝🏼

[@homeslicesharpening]

Oh my gooooodness! I am so glad it missed your foot!!!

[@latinodeathjazz]

Wow, you’re right man - this is amazing! Especially when you consider this is just basic victorinox steel and not something like 15V or K390.

[@homeslicesharpening]

Yeah, it's getting pretty crazy!

[@knickly]

Now this is an exciting result!!

[@homeslicesharpening]

Dude, seriously! I can't wait to try this edge on everything!!!!!!!!!!

[@knickly]

@@homeslicesharpening yessss that thing is insane!

[@danielbottner7700]

Having the Norton Crystolon Corse & double sided DMT 320 & 600 Mesh diamond plates I prefer the diamond plates. It's just more work to keep the Norton Crystolon clean & sharp. My preference ifs for more aggressive edges most often using the 320 Mesh DMT. - Using the 600 Mesh to touch up the cutting edge to cut delicate low moisture foods like fish. -I'am tempted to try some CBN sharpening abrasives. -Are there any CBN Abrasives with a discontinuous abrasive pattern to minimize forces applied to the cutting edge while sharpening ?

[@homeslicesharpening]

I'm not sure, I know there is a company out of Ukraine who sells CBN stuff on eBay, Spyderco makes this stone, and Venev recently came out with a Resin-Bonded CBN stone (which I bought and plan to try soon!) My EZE-Lap 250 grit is wearing pretty thin, and not achieving the same aggression as this test, but I recently bought an Atoma 400 grit stone to compare directly to this Spyderco stone. I will test it eventually, but have to return to the US to get it from my parents' house first haha - so it will be September or later. All the best Daniel!!!

[@homeslicesharpening]

Not that I've seen. I know there is a Ukrainian company selling small CBN Stones on eBay, Spyderco, and I've seen that Venev has a small selection of Resin-Bonded CBN stones coming out. My EZE-Lap 250 grit is getting so worn these days it's probably not a fair comparison between it and this fresh Spyderco 400 grit abrasive in terms of aggression created. I have bought one of the coarse Venev CBN Stones to try it out, as well as an Atoma 400 grit to compare directly to this Spyderco 400 Mesh. I just have to pick them up from the USA, so they won't get any testing until September or later. Take care Daniel!!!

[@danielbottner7700]

Awesome ... September gives me time to design & build some simple knife blade environmental control devices. My idea is something small to clamp to the knife blade reduce cracking. Concepts are detailed in the last two e-mails. Shipping within the USA is easy for me but not sure how complicated it is to ship to New Zealand. @@homeslicesharpening

[@mikeobrien4081]

Hey Gabe, really enjoying these videos chasing the ideal dual grit technique. I noticed something in your microscope vids; coarse scratches running perpendicular to each other, creating a sort of checkered surface. I wonder if this creates weak points, since the diamond-shaped "islands" of metal bounded by the scratches have no lateral support in any direction. Contrast this to a unidirectional scratch pattern where the surface is "fluted" rather than "checkered", and the ridges between the "flutes" are continuous in one direction and thus laterally supported in that direction. This could just be exaggerated texture due to lighting and video artifacts, but I do wonder if this checkering creates weakness at and behind the edge, manifesting in reduced impact toughness. The solution would be grinding out the existing deep scratches and resharpening unidirectionally, which would be a pain freehand but easy on a fixed system. (This also raises a possible benefit of fixed systems, if the checkereing scratches are indeed detrimental).

[@homeslicesharpening]

Hey Mike! Thanks for the feedback, and eloquent discourse! Yes, you do see a checkering pattern on the coarse side. The reason for this is that it is extremely difficult to hand-finish a Victorinox (or any relatively soft steel) on a coarse CBN stone without accidentally raising more burr on the opposite side. It is also difficult (in my experience) to pop the burr off which has been formed by the fine stone rather than pushing it back to the other side with your coarse CBN. When I am struggling to accomplish these things, I will (at times) do a few finishing strokes in a different direction. This often pops off of the fine stone's burr, but gently enough it does not raise a burr substantial burr on the other side. I know some (including Alex at Outdoors55) believe that consistent scratch pattern is really important. I guess I have not observed/experienced that yet. Like it would be pretty strange for this edge to have cut 40mm manila 13 times if the checkering ruined edge stability, you know? I'd imagine that using a fixed system would open up possibilities that could make a dual grit edge better, especially in terms of uniformity and stability. It is also possible that the inability to gain feedback from the feeling of the blade on the stone may create difficulties in fine tuning that dual grit apex. I am not sure. At the moment, I would like to sort out what the best dual grit edge is for the money (and as fixed systems cost a good amount of money, I am trying to see what the best results we can get are in a hand-sharpening-only application). In the future I would be open to splashing out and getting a fixed system. For now, part of the fun for me is the art and finesse and feel of the edge on the stone, and knowing I did it with my own hands. Maybe that sounds weird, hopefully it makes sense in terms of my openness, but also my desire to finish this series as-is.

[@mikeobrien4081]

@@homeslicesharpening No worries, I'm not seriously suggesting you add to your workload, just making some observations. Your viewers already spoiled by the amount of work you put into these projects. I hadn't considered how fiddly the burr alignment stage of dual grit sharpening is, and how that constrains what kind of finishing you can do. As for fixed systems, I agree that they might not provide the level of fine control and feedback required. I wonder how many people who use fixed systems do their final deburring freehand. And I completely understand the skill and craft appeal of freehanding; it's 90% of why I got into sharpening. Sticking with freehand to avoid introducing new variables into your series of experiments makes complete sense. Thanks for all your work and openness, you're a real gift to the community.

[@homeslicesharpening]

@@mikeobrien4081 Oh thanks Mike! I would never want you to feel like I had responded out of some sense of rejecting your suggestion though - I honestly think the day will come where I feel like I've wrapped up the rabbit holes I wanted to explore in freehand sharpening, and am tired of not ever being able to fully isolate angle - and at that point I am sure I will splash out to tinker the world of fixed systems... I think they are really cool! Just being transparent in terms of my current plans and the goals I'd like to see to completion first. Thanks so much for the kind words, you are a gift to me as well bro. I really appreciate the kindness and rich perspective you bring.

[@helterskelter156]

Hey, Did you ever manage to test it with an Atoma 140 Diamond plate?

[@homeslicesharpening]

Hey helterskelter - because of your comments I looked into extreme coarse options. I am sorry, I did not get an Atoma 140 yet. However, I did purchase a Venev Resin-Bonded CBN stone (because of the success of this test) in FEPA 80 and 140 grit. I also (because of the success of this test) purchased a 400 grit Atoma plate (to compare a good 400 grit diamond to this 400 grit electroplated Spyderco CBN) Cheers, hope all is well with you!

[@helterskelter156]

@@homeslicesharpening Heck yeah. Some great plates you got there! Enjoy the new gear, and I’ll be looking forward to the videos. God bless, HS.

[@homeslicesharpening]

@@helterskelter156 God bless you too man. Have a great day!