[/quote]darkangel55555 wrote:[quote="faridknives"][quote="ManixFan"][quote="faridknives"]
That is pretty cool! It's like a K2 Mehr.....and a mini-Mehr. Doctor Evil would approve! :D
What are the different blade sizes between the custom and the production? As well as the overall open & closed length? Do you think that the smaller version will ever end up as production?
Also, I am curious and perhaps you might be able to answer this question since you are open to using lesser known alloys in knifemaking. But is there any reason why people aren't using 9v steel for blades?
It looks like it has a lot better edge retention than 3v yet is a lot tougher than 10v. Is there a reason that it isn't being used in knives? It seems to me like a very tough steel with still very great edge retention would be desirable in knife making but I haven't seen it used in any knives at all.......only the characteristics from the CPM data sheets.
Perhaps (likely) I am missing something in not understanding why we don't see this steel in knives? :confused:
Spyderco version is the same size as the custom, same blade length, same closed length.
The small K2 as far as the custom version goes I will release that in 2015, Spyderco version I can not give any info right now.
9V is good as well, K390 is kind of similar with more carbon more moly with the added 1% Tungsten and added 2% Cobalt.
10v is not tougher that 3v, CPM-3v is in the extreme when it comes to toughness, it can be heat-treated to 62RC and it would actually be tougher than most heat-treated steels on the planet (for knife application), CPM-4v is the next best thing after CPM-3v.
You don't often see some of the steels I use because most people just want to make a knife, that's all, I want more than that from my knives, also my experiments don't always work as well as I would like them to, for example the CPM-REX 121 blades I have made although it is a high carbide steel but it was never made for knives, it is a 'Tooling Steel' but I experimented with it and it kind of worked for 'Knife Application' and it kind of didn't but we all have to experiment, live and learn from all our experiments.
CPM-10v on the other hand is one of the ultimate steels for knife application. I hope I have answered all your questions.
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Farid, what're your intended applications and performance characteristics for the D3 K2, and how would it stack up against a 4V equivalent? Or, to bring it back to topic, the 10V used here?
In other news, my REX121 K2 isn't keeping itself 'indefinitely sharp' like how Cliff and Jim have described. Guess my cardboard isn't hard enough - or the steel pipe that it gets dragged across is rolling that edge first.[/quote]
I use D3 because it is better than D2, holds a very good edge but provided you know how to heat-treat it well it also can be tough enough which is why I still use it for BladeSports knives.
D3 compared to CPM-4v, well you can not, 4v is a lot better steel and the composition will show that, it also is in a totally different price category, D3 is not CPM but 4v is. CPM-10v is on a different planet compared to both these steels, for a while they will all cut well, after a while you will see the difference in the 10v, this is one of the reasons I chose CPM-10v for the production version of my K2, I wanted to give the best steel to all the users, a steel grade which holds an edge far greater than most steels without question, it takes the worry of sharpening out of the equation when you are away for a long time and away from your sharpening stones.
The REX 121 is like I have said before more suited for Tooling industry but I wanted to experiment with it, experience has now proven that it is an extremely capable steel for what it was designed for (Tooling ) but as a knife blade it can only hold a semi-sharp edge, same as CPM-15v, same as CPM-s125v, these are my findings after using all these steels.
I hope I have answered your questions.
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