^ wow!
Good looking knife Jim,i like the pure black G10 you did there :)
K390 and S110V Discussion Thread
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chuck_roxas45
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Why should Ankerson do that when 15dps is quite good enough for that performance? If 15dps works well, why go for something that doesn't? Personally, if I need more performance, I'd regrind(or have it done) to something thin behind the edge and bevel at a reasonable angle.Zenith wrote:I would love to see you drop the edge down to 5 degrees per side and redo the testing.
Methinks some people are just looking for ways to make K390 look bad. :p
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chuck_roxas45
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lulz...:dshunsui wrote:well it does rust, but then again, some of the patinas i've seen look pretty nice.
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I think I will leave this one as it as I already have a Custom in K294 that's .010" behind the edge and I keep that one at 10 DPS.chuck_roxas45 wrote:Why should Ankerson do that when 15dps is quite good enough for that performance? If 15dps works well, why go for something that doesn't? Personally, if I need more performance, I'd regrind(or have it done) to something thin behind the edge and bevel at a reasonable angle.
Methinks some people are just looking for ways to make K390 look bad. :p
Because I am selfish and want to know because I am curious. :D Ankerson is happy with the performance of his knife and that is that.chuck_roxas45 wrote:Why should Ankerson do that when 15dps is quite good enough for that performance? If 15dps works well, why go for something that doesn't?
Good for you, I prefer low angles. Does that make one right or wrong?chuck_roxas45 wrote:Personally, if I need more performance, I'd regrind(or have it done) to something thin behind the edge and bevel at a reasonable angle.
Not at all, I am interested because I have a custom with Nitrobe 77 at 5 degrees per side that I use to cut pipes up and general use with no issues but experienced significant edge degradation of CPM-M4 at that low angle, but I still love my CPM-M4. I am not advocating one above the other, personally, I could care less at this point about x is better then y because of ABC + ET = a bicycle over the moon. I was curios because of my experiences.chuck_roxas45 wrote:Methinks some people are just looking for ways to make K390 look bad. :p
In this video at 04:30 I use the Imvubu to cut some pipe for comparison to my Swamp Rat Rodent Solution.
[video=youtube;bwichkfNIgE]http://www.youtube.com/watch?v=bwichkfNIgE[/video]
Here is the stock testing video:
http://www.youtube.com/watch?v=GCITlARJvcY#at=471
Here the edge saw some deformation when I was initially using it as a scraper. The edge was at 15 degrees per side I believe, then I sharpened down to 7 degrees per side, then down to 5 degrees per side and the steel still only rolls slightly rather then chip out.
Here is the thread with CPM-M4 at low angle that you commented on as well:marthinus wrote:An update.
I have been EDCing the knife non stop. Used for multiple tasks, one of which was to use it as a scraper on a plastered walls. Due to the texture of the wall it had hills of cement. This did its due on the edge, of coarse I did not baby it and continued to use it for all manner of tasks. At the end. This is how the edge looked where most of the work was done.
As you can see I did a number on the edge.
So, pulled out the stones, destressed the edge, reshaped the edge and dropped the angle a bit. I used a sharpie to help. My eye coordination did not work that well when I did this. Took around 5 minutes to remove and reshape the edge.
Went onto the Spyderco UF stone and this is the result.
After that the knife was used again for some time until I decided to reprofile and drop the angle to as low as I could. Edge is around 7 degrees per side. Took around 15 minutes to reshape the edge, remove any microbevel and polish the edge to mirror.
Removed some images to be able to post
What intrigue me at this stage is sharpening for performance. This thread was a good read: How to make the Benchmade Axis perform and some revisiting of the following article on transition bevels:
Sharpening
I dont know how exactly I will go ahead and do this, but will figure it out later.
CPM-M4-at-low-angles-My-experience-recently
"If you wish to live and thrive, let the spider run alive"
"the perfect knife is the one in your hand, you should just learn how to use it."
If you don't have anything good to say, then don't say anything at all
My Youtube knife use videos and more: http://www.youtube.com/user/mwvanwyk/videos
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"the perfect knife is the one in your hand, you should just learn how to use it."
If you don't have anything good to say, then don't say anything at all
My Youtube knife use videos and more: http://www.youtube.com/user/mwvanwyk/videos
Knife makers directory: http://www.knifemakersdirectory.com/
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chuck_roxas45
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Ok, my bad and I apologize. I just got defensive with all the "steel bashing" being done.
On the condition that you don't come out with saying AEB-L beats everything.
On the condition that you don't come out with saying AEB-L beats everything.
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chuck_roxas45
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Yep, I thought he was that other "take the steel to crazy angles and make it fail" guy. I'm man enough to admit that I made a mistake though, :DJNewell wrote:I really screwed up...
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Cliff Stamp
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To be clear though, CPM-M4 as used in knives isn't really HT as a cutting steel, it is undersoaked to provide higher durability, this is especially true in the large choppers (competition cutters), but even in the small folders. I would be very curious what would happen with an actual M4 blade hardened as it is in cutting tools because the steel will be significantly harder with reduced carbide aggregate. I think you are going to have to go custom to get that though. As a poor man's alternative, get a power hawksaw blade and find someone to grind you a blade out of that. They are usually M2 but can be other HSS and they will be much harder and he soaked much hotter so the edge stability will be higher.Zenith wrote:... experienced significant edge degradation of CPM-M4 at that low angle
^ Cliff
I am getting more intrigued by M2 but I don't know about its availability locally. There is one maker I know of that runs CPM M4 at 67HRC, but I don't know his heat treat process. Will talk to him at our Guild show.
I am getting more intrigued by M2 but I don't know about its availability locally. There is one maker I know of that runs CPM M4 at 67HRC, but I don't know his heat treat process. Will talk to him at our Guild show.
"If you wish to live and thrive, let the spider run alive"
"the perfect knife is the one in your hand, you should just learn how to use it."
If you don't have anything good to say, then don't say anything at all
My Youtube knife use videos and more: http://www.youtube.com/user/mwvanwyk/videos
Knife makers directory: http://www.knifemakersdirectory.com/
"the perfect knife is the one in your hand, you should just learn how to use it."
If you don't have anything good to say, then don't say anything at all
My Youtube knife use videos and more: http://www.youtube.com/user/mwvanwyk/videos
Knife makers directory: http://www.knifemakersdirectory.com/
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Cliff Stamp
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