http://www.knifeforums.com/forums/showforum.php?fid/23/Dedicated to the discussion of knives and knife related topicsnoneThu, 11 Mar 2010 00:05:02 GMTThu, 11 Mar 2010 00:05:02 GMT1http://blogs.law.harvard.edu/tech/rssFusionBB 2.2 (www.fusionbb.com)http://www.knifeforums.com/forums/showtopic.php?tid/873518/http://www.knifeforums.com/forums/showtopic.php?tid/873518/
Does anybody else know of any other folding knives like that? I know of the CRKT desert cruiser, the CRKT M16 series, and the Boker AFD, but the AFD is kinda pricy (and I'm not comfortable with the legality of the double edge). And the Desert Cruiser seems kind of cheap to me.. ]]>Wed, 10 Mar 2010 23:29:23 GMThttp://www.knifeforums.com/forums/showtopic.php?tid/873510/http://www.knifeforums.com/forums/showtopic.php?tid/873510/
]]>Wed, 10 Mar 2010 22:11:08 GMThttp://www.knifeforums.com/forums/showtopic.php?tid/873505/http://www.knifeforums.com/forums/showtopic.php?tid/873505/

Expensive! ]]>Wed, 10 Mar 2010 20:32:01 GMThttp://www.knifeforums.com/forums/showtopic.php?tid/873494/http://www.knifeforums.com/forums/showtopic.php?tid/873494/http://www.plazacutlery.com/Randall... ]]>Wed, 10 Mar 2010 17:09:59 GMThttp://www.knifeforums.com/forums/showtopic.php?tid/873486/http://www.knifeforums.com/forums/showtopic.php?tid/873486/ 7" folded 1' open. The handle appears to be some sort of deer horn. I notice that on the top of the knife there are shotgun numbers 10, and 12 i believe for removing spent shells. The craziest part about this knife is that it is a giant switchblade! Push a button and the blade comes flying out, i remember when i first got the knife i could barely hold it when i opened it. The blade has an imprint that says Virginia INOX. Pictures are below, i am not interested in selling this knife for it has sentimental value, however i would like to know more about it. I will also post a picture of all the other knives i acquired from my grandfather. Any response would be appreciated, and sorry about the poor quality photos.






In the picture below some of the knives are newer my dad bought me as a kid.
]]>Wed, 10 Mar 2010 15:23:32 GMThttp://www.knifeforums.com/forums/showtopic.php?tid/873477/http://www.knifeforums.com/forums/showtopic.php?tid/873477/Wed, 10 Mar 2010 12:43:24 GMThttp://www.knifeforums.com/forums/showtopic.php?tid/873458/http://www.knifeforums.com/forums/showtopic.php?tid/873458/
Few days ago Cotdt proposed to add different viewing perspective to the graph builder. So, the credit goes to him for the idea.
Basically, just mass % doesn't tell the whole picture, and it is useful to see the numbers of atoms of each elements in the mix, since it is individual atoms that create the carbides and mass % is quite different from the percentage of the atoms in the alloy. So, 1% Carbon and 1% Tungsten are quite different number of atoms because of the different atomic mass.

Basically, I've added 2 more options to the graph. Atom Count and Molar Mass %. They both represent numbers of atoms in the alloy, once is simply gives the number of the element atoms in 1000 atoms of the alloy. Another is simply molar mass % for the alloy. Details on the molar mass can be found in Wikipedia, but it's a pretty simple concept. Inside the graph, from the settings many (More button) you can use Show Composition As: combo box to sleect the method, or use query parameter gm to select the mode, 0 for mass %, the usual, then 1 for atom counts and 2 for molar mass %.

I've looked at the familiar steels with new options and it is really interesting picture and for certain things it is quite telling.

Let's take ZDP-189. 20% Chrome, 3% C, and it's a lot less stain resistant than bunch of other steels with less Chromium. Take a look at this graph:ZDP-189 vs. 440A steel atom count comparison

For 1000 atoms of ZDP-189 alloy we have 385 atoms of Cr ad 250 atoms of C. For 1000 atoms of 440A we have 346 atoms of Cr and 62 atoms of C.
So, I'm not so sure how many atoms of C end up in the Chromium carbides, but as you can see the difference in the count of the Cr and C is significant for those alloys and 440A having a lot more free Cr is more stain resistant.

On the other hand, if you look at CPM S35VN steel composition atom counts, in 1000 atoms of that alloy we have 112 atoms of C and 5 atoms of Niobium. S35VN has 1.34% C and 0.50% Nb, less than 3x, but atom count is a little over 21x.

Niobium is considered to be one of those super additions to the steel, although I am not quite sure how 5 atoms of Niobium can so dramatically alter steel properties. I mean, obviously it is all not as simple as just comparing numbers of the atoms.

On the other hand, CPM S110V steel composition atom count shows 238 atom of Carbon with 38 atoms of Niobium. So whatever the Niobium effects are should be a lot more pronounced in there. Also, interestingly S110V has 233 atoms of C vs. 269 atoms of Cr. I.e. less even difference than in ZDP-189, but S110V is much more stain resistant, perhaps because of the 177 atoms of Vanadium in the same mix and bunch of other things.

Another interesting part is that whatever carbides I've looked up, each atom of Carbon binds to one or more other element, Cr3C2, Cr7C3, WC, Nb2C, VC, Mo2C and so on.
Not being a metallurgist I don't really understand when and how carbides form and if there are several alloying elements, e.g. niobium, tungsten, moly what forms carbides and what not. Or what percentage.

Well, I guess others with more knowledge in this area can comment on the rest, but it was quite interesting observing the relationships of the numbers of the atoms. Of course it is directly related to the element mass %, but the ratios are very different. ]]>Wed, 10 Mar 2010 04:04:23 GMThttp://www.knifeforums.com/forums/showtopic.php?tid/873446/http://www.knifeforums.com/forums/showtopic.php?tid/873446/
It started out as just putting the finishing touch on for a needle sharp tip- something I'm sure many of you do, thusly:



When I made the transition from three bladed Stockmans to single bladed pocket knives, I missed the ability to have a "scraper blade", you know, the one that cleans battery terminals...

One day it struck me as I was stroking the spine fore and aft flat across the stone, putting the aforementioned needle tip on, that I had regained my ability to have a sharp scraper edge without harming my fine edge.

I hope you can see where I "sharpened" the black coating off the spine for the first 1/2" or so of the tip.



Here it is re-blackened with a sharpie



After I get down to a nice, crisp, flat spine, I leave the burr. That is what makes it a sharp scraper, which will easily take a nice curl of blue plastic off'n something blue and plastic... or whatever.



Thanks to youse guys that taught me how to post pictures today!

Have yourselves a nice day, unless you've made other plans. -Mark ]]>Wed, 10 Mar 2010 01:24:14 GMThttp://www.knifeforums.com/forums/showtopic.php?tid/873442/http://www.knifeforums.com/forums/showtopic.php?tid/873442/Wed, 10 Mar 2010 00:52:34 GMThttp://www.knifeforums.com/forums/showtopic.php?tid/873433/http://www.knifeforums.com/forums/showtopic.php?tid/873433/Tue, 09 Mar 2010 23:39:49 GMT