Can 8cr13mov hold a 30° edge?

[fast.ed]

What did you use to get such a nice edge?

fast.ed

[prime77]

Thanks guys for the compliments. I started out going freehand on my DMT coarse stone but just couldn't get it right that night for some reason so I used my DMT aligner magna guide with the coarse stone to set the bevel. Then took the clamp off and went through the stones fine, through extra, extra extra fine removing the scratches and the burr from the previous stone each time. To get the mirror edge I used DMT diamond paste on a leather strop at 6, 3 and 1 micron.

[Resist]

I'm not sure what my Tenacious edge angle is supposed to be from the factory. My Wickededge sharpening system only has a max of 30 degrees, so I used that. I was able to get the edge nice and shiny but it doesn't seem very sharp, at least when cutting paper. This may be my fault as I am rather new at sharpening, so I think I have to give it another go.

[jackknifeh]

I'm not sure what my Tenacious edge angle is supposed to be from the factory. My Wickededge sharpening system only has a max of 30 degrees, so I used that. I was able to get the edge nice and shiny but it doesn't seem very sharp, at least when cutting paper. This may be my fault as I am rather new at sharpening, so I think I have to give it another go.

I might be wrong but I'm 99% sure I'm right about Spyderco knives come with a 30 degree inclusive (15 deg. per side) back bevel they call it and maybe a 40 degree inclusive edge bevel (20 deg. per side) edge on the very edge. That way when you sharpen with a sharpmaker set to 40 deg. you should always be hitting the edge and sharpening the blade. That is supposed to be the standard but I've gotten knives from them that aren't exactly like that but close. Your Tenacious should be pretty close to that from the factory.

Your Wickededge with a max of 30 deg.? That has got to be 30 deg. per side which would give you an inclusive edge of 60 degrees. I think if you used 30 deg your edge bevel is VERY high. Try setting the Wickededge to 20 deg. and see how that works. It may take a while to hit the edge depending on how wide your 30 deg. bevel is. Use a magic marker to mark the edge of your knife. Then you will see where the stone is hitting your blade by where the magic marker is being removed from the edge. When the marker is removed from the VERY edge you will be sharpening your blade. Also check for a burr on the opposite side of the edge than what you are stroking. When you get a burr along the entire edge you will be sharpening your knife. I hope that made sense. Oh yeah, what is the lowest angle your Wicked edge can be set to? I'm curious about the Wicked edge sharpener.

Jack

[phillipsted]

The Wicked Edge has markings and indents down to 15 degrees. You can take it a little lower than that (down to maybe 12 deg.) but you'll be doing it by eye.

The real issue is that when you get very narrow angles, the stones rub against the clamp if you don't set the blade very high up. I sharpen most of my knives at 18 deg.

I bought the ceramic stones from Clay at W.E., and those babies are really nice. They are at 1200/1600 grit and make a great transition from the diamond stones to the strops.

I also read that Clay is getting set to release a full set of custom cut Chosera water stones from Jende that fit the W.E. He also said that there will be a set of Shapton stones in the future. More choices!

TedP

[Resist]

Your Wickededge with a max of 30 deg.? That has got to be 30 deg. per side which would give you an inclusive edge of 60 degrees.

I think you're right and I put a 60 degree edge (30 degrees each side) on my knife.....no wonder it didn't cut paper well. I am such an idiot.


UPDATE: I contacted Spyderco and they said the Tenacious comes 18-20 degrees per side from them.

[ghostrider]

8Cr13MoV has a Rc hardness of 58-59 according to A.G. Russell's steel guide as well as others. I would like to see the Rc on Spyderco's steel chart in Edge-U-Cation. I have had two knives with this steel. A Meadowlark which I liked but gave to a friend and now I have a Byrd Wings. I use that on my tool belt as a work knife. The steel does perform like AUS-8 IMO. It holds an edge fairly well but if it does need a quick touch up while working all you need is a small stone or ceramic steel as part of your tool set. I've never taken it down to below 30 degrees inclusive but had no problems with that angle.

Someone mentioned ZDP-189 at low angles. It does get very sharp and holds an edge forever under light to medium use. I've found that at very low angles ZDP chips very easily. Right now I have all my ZDP knives sharpened per Spyderco's example. 30 degree back bevel with a 40 degree edge bevel. Haven't had a chip in over a month. Also I got chips just using it for average use when the angles were as low as 12 deg. back bevel and 18 deg. edge.

Jack

Jack

A.G. Russel, and the others should have checked with Sal. Five years ago he told us that the byrd steel was 61.

Personally, I think it sharpens like it too.

[vivi]

iirc ce cara cara's were sharpened to 15 degrees on the sharpened side....and only sharpened on one side. Spyderco seems to think it can.

[ghostrider]

iirc ce cara cara's were sharpened to 15 degrees on the sharpened side....and only sharpened on one side. Spyderco seems to think it can.

Been EDC'ing a Crossbill of one form or another for five years now.

I don't use the 40 settings.

[razorsharp]

My ambitious came with a hollow ground bevel. Is that normal?

[chuck_roxas45]

I don't find that I have that much better performance in relation to maintenance of 8Cr18Mov at 30 degrees inclusive. I bevel mine at 36 degrees inclusive and touch up at the 40 degree slots on the sharpmaker. I find this the ideal(for me) angle for my cutting needs and edge durability.

[STAK]

I'm bringing up an old thread to hear about other stories of how low people have taken 8cr13mov. I went to sharpen my Tenacious and made some mistakes with my stones so I had to go lower than I had originally planned to make it right. My guess is that I'm around 30ish inclusive now with a very polished mirror edge. I would like to hear how other peoples edges are holding up at such low angles with this steel.

:spyder: A very beautiful mirror edge to stare !!!! . . . . I can achieve that mirror edge only with my EDGE PRO up to 6000grit, as i did to my orange MILLIE, my black MILLIE, my PACIFIC SALT, my blackENDURA4, my RAT1 and few other folders and knives that i use often . . . . You said you did that by hand? . . . . I sharpen my TENACIOUS at 25deg per side on a Lansky sharpener and finish it at 40deg on the sharpmaker using fine and ultrafine grit rod . . . . That way it is razor sharp and it holds an edge very well i'd say about less than half the time compared to my ENDURA's VG10 40deg inclusive sharpened edge . . . . :eek: :spyder:

[spydietingle]

My ambitious came with a hollow ground bevel. Is that normal?

To my knowledge, all of the value folders are FFG. mind snapping a pic?

[razorsharp]

nah it is full flat ground, but the bevel, not he grind , instead of being a V was more like what you would get if you used this

sort of a hollow bevel lol

[neuron]

I've cut a lot of cardboard with a Tenacious taken down to 30° inclusive, and it's performed superbly: no chipping, rolling, or other issues. My Kershaw Nerve, another 8Cr13MoV knife, has seen even more cardboard duty than the Tenacious with an even lower edge angle (probably 27° or so), again with excellent performance and no problems.