M390 vs. M4 Rope Cut Test

Ulf Krogstad said:
I know it wouldn't be a fair test cause their not the same design,shape,blade length ect. All your doing is repeating what Ankerson has done already and others. I don't give a fuck. I know either the contego or lionsteel would win hands down. Your just repeating shit people have said a thousnad times. Either way i don't fuckin care. For your next test why don't you see how many of your knives you can shove up your ass before you die.:) Good luck your scientific tests professor.:)
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Uh...ok
 
So, I'm thinking you didn't like my post? Not sure what about it made you so edgy. With that attitude I don't think you should at with knives at all.

No one attacked you. No one suggested you were wrong. No one has done anything to elicit that response from you. I don't think you are getting the enjoyment out of this hobby that we are. If this upsets you so I would invite you to not participate in any more of my posts. Have a great night. You need it.
 
me2 said:
So given that edge geometry is a significant contributor to rope cutting edge holding tests, what does it mean when a knife with thicker geometry and a shorter blade in a 420HC class steel can cut the 3/8" rope 300 times and still cut notebook paper? I checked a Gerber Remix and made it to 300 cuts and still could slice notebook paper on the first try. The edge is 0.03" at the top of the bevel with a 3" long blade.
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It really depends...

To really see what that really means one has to compare that 420HC knife to another knife with like geometry....

But to test it by itself it doesn't really mean anything because there isn't anything to really compare it to if you can understand what I am trying to get at here.
 
Ulf Krogstad said:
I know it wouldn't be a fair test cause their not the same design,shape,blade length ect. All your doing is repeating what Ankerson has done already and others. I don't give a fuck. I know either the contego or lionsteel would win hands down. Your just repeating shit people have said a thousnad times. Either way i don't fuckin care. For your next test why don't you see how many of your knives you can shove up your ass before you die.:) Good luck your scientific tests professor.:)
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I hope this is your last post. That lacked tact.
 
Ulf Krogstad said:
I know it wouldn't be a fair test cause their not the same design,shape,blade length ect. All your doing is repeating what Ankerson has done already and others. I don't give a ***. I know either the contego or lionsteel would win hands down. Your just repeating shit people have said a thousnad times. Either way i don't **** care. For your next test why don't you see how many of your knives you can shove up your **** before you die.:) Good luck your scientific tests professor.:)
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Completely uncalled for.....
 
The next test is going to be an infraction for Ulf, see if he can melt down or not for being completely out of line and abrasive for no apparent reason. Pass or fail? Hmmm?
 
Great writeup! :)

Does the rope used contain anything in it that is abrasive such as certain silicone particles? I am always impressed when I read about M390. It seems to perform well in virtually all conditions, and really leave everything in the dust when it comes to cutting objects that tend to be more abrasive, even when being compared to steels that are 5+ higher in Rockwell Hardness!

Any idea if the M4 Millie is from when Spyderco was supposedly hardening M4 slightly differently (IIRC, I read here earlier models were a little harder)

I just got a M390 blade I am going to EDC...hopefully it won't be too hard for me to sharpen!!!
 
pnsxyr said:
Great writeup! :)

Does the rope used contain anything in it that is abrasive such as certain silicone particles? I am always impressed when I read about M390. It seems to perform well in virtually all conditions, and really leave everything in the dust when it comes to cutting objects that tend to be more abrasive, even when being compared to steels that are 5+ higher in Rockwell Hardness!

Any idea if the M4 Millie is from when Spyderco was supposedly hardening M4 slightly differently (IIRC, I read here earlier models were a little harder)

I just got a M390 blade I am going to EDC...hopefully it won't be too hard for me to sharpen!!!
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Depends on the rope really and how clean it is, but in general Manila Rope is pretty abrasive, much more so than cardboard on average...
 
@ Pnsxyr, I completely agree. M390 is absolutely amazing. Reference your question about the M4, idk what "batch" this is per se. I have had the knife about a year, but I'm not sure of the actual production date. As far as the rope, I like to use manilla because it is a natural fiber. As silly as it sounds, I buy the same brand from Home Depot every time. I try to keep it as "same" as possible, given that it is a natural fiber. I figure the same brand, from the same place, eliminates as many variables as possible given that it is a natural fiber. I WILL tell you this: the M4 and the M390 flat ran through this 50 feet of rope. :) I went through about 42 of so feet during this particular test. These steels flat cut!!
 
Ankerson said:
It really depends...

To really see what that really means one has to compare that 420HC knife to another knife with like geometry....

But to test it by itself it doesn't really mean anything because there isn't anything to really compare it to if you can understand what I am trying to get at here.
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Does the Military not have a similar enough geometry? From your measurements, there is only a 0.005" - 002" difference in edge thickness with the Gerber being thicker, and the edge angle of the Gerber is larger. I'm not going to push that whatever Gerber used is better than S30V, but I will say I think rope cutting isn't sensitive enough to tell differences as reliably as was once thought.
 
me2 said:
Does the Military not have a similar enough geometry? From your measurements, there is only a 0.005" - 002" difference in edge thickness with the Gerber being thicker, and the edge angle of the Gerber is larger. I'm not going to push that whatever Gerber used is better than S30V, but I will say I think rope cutting isn't sensitive enough to tell differences as reliably as was once thought.
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I'd imagine a lot of these results are very dependent on the technique and, more importantly, the pressure you are using.
 
Now we're getting somewhere. In any case, it's good to know my lower end steels aren't outclassed, since that's all I have now.
 
I always find these test interesting. Recently found this that I also found interesting showing a simple carbon steel with proper heat treat and geometry cutting rope.

First rope cut count is 150. Still shaves.

Bumps the rope up from 3/8 to 3/4.

Do 100 more cuts, not hair popping sharp, still shaves, no discernible dings. Not bad for a simple carbon steel that can still be stropped back to sharpness.

[video=youtube;cRjOtyqJ6P4]https://www.youtube.com/watch?v=cRjOtyqJ6P4[/video]
 
Vegas Blade said:
So, I'm thinking you didn't like my post? Not sure what about it made you so edgy. With that attitude I don't think you should at with knives at all.

No one attacked you. No one suggested you were wrong. No one has done anything to elicit that response from you. I don't think you are getting the enjoyment out of this hobby that we are. If this upsets you so I would invite you to not participate in any more of my posts. Have a great night. You need it.
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I didn't find it polite to call me out like that. You basically said my intellect cannot grasp what your tests are about. If somebody calls me out and basically calls me a retard i'm not just going to sit there and take it. You politely called me stupid. Therefor it didn't make me happy.It seemed also like your saying no one should be doing any testing on these steels cause you have more skills or knowledge or something and should leave it to the professionals. I believe Ankerson has tested all these steels already which makes the tests moot. See i can kinda talk all smart:foot:. Anyways hope there's no hard feelings,wish you well,and hope all your testing goes well too. I won't particate in anymore of your posts i worn out my welcome and i know it and honestly my knife knowledge is far less than anyone here so i'll just stay out of it. Sometimes stuff just rubs me the wrong way and i might have bi-polar or something so don't take it personally even though I'm pretty sure you were calling me an idiot and possibly trolling me. Anyways i dropped it and you won't here from me again. Wish you well.
 
Ulf Krogstad said:
I know it wouldn't be a fair test cause their not the same design,shape,blade length ect. All your doing is repeating what Ankerson has done already and others. I don't give a fuck. I know either the contego or lionsteel would win hands down. Your just repeating shit people have said a thousnad times. Either way i don't fuckin care. For your next test why don't you see how many of your knives you can shove up your ass before you die.:) Good luck your scientific tests professor.:)
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So where did that come from? :rolleyes:
 
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