Jose :
unless you can name a steel that will out perform it in *every* respect then what merit do your comments have
Note that this works in reverse obviously, 52100 doesn't outperform the steels I listed in all respects either. Therefore by your logic comments on its performance have no merits either. In fact comments on no steel have any merit (or knife for that matter as no knife outpeforms every other knife in all respects).
Is it stiff enough to satisfy your needs when being used to pry?
With this geometry I would assume so unless the edge quench depth is very shallow. As I noted, I generally need a 7"+ blade to require this stock thickness for prying. The tip might bend on heavy wood work depending on way in which the hardening runs in that area.
Ed might have made the statement that his "pronghorn" knives were not designed for cutting hard materials, that does not mean that they are not suitable for such tasks.
There is no might. He clearly stated in the video that the knives are not made to cut bone. He again repeated this here and further degraded any individual who would attempt this with any knife.
You then continue to arguing support for using a knife outside the makers clearly stated scope of work. In the same thread I get attacked as an abuser - the irony here is mind boggling.
If he wants to change his opinion on the scope of work I would gladly do any such work with this knife, all he has to do it say the word.
Fully hardening the blade would make it stiffer ... how much stiffer does the blade need to be to satisfy your performance needs?
I would not need a pipe to bend a 1/8" blade with a dual tapers, one inch wide with a soft spine, vice locked at one inch from the tip on a 4" blade. If you actually want proof of this I could easily readily bend one on camera.
[before anyone gets the idea that I am claiming a massive feat of strength here - try it out]
If you would dispute the fact that I really did this I could provide you with the name of an Engineer you could send such a knife to who would witness the bend and sign a statement to this fact. Of course pick your own witness if you would believe I could get an Engineer to publically lie about such a fact.
Futher I would also realize that there are people far stronger than I am who could bend knives easily that I would find difficult. This there needs would be met with different steels, heat treatments and stock thickness.
... you consider Ed to either be lying or making claims based on ignorance.
No I believe that his knives can do what he says he has done, I have never said otherwise. What I said quite simply was that I would want a knife with the performance maximized in another areas.
As for the benefits of triple quenching, what I questioned was the comparison to stock removal blades by other makers who have optomized their heat treating for those methods.
You made a comment that choosing a suitable knife for your intended task would assume either the maker or client knew what what features would make it so. Do you find it hard to believe that there are plenty of makers and collectors out there who are as experienced and knowledgeable as you are, if not more so?
Obviously not. The point you missed in the above, which was made clearly in a recent review (the Parrell custom) was that I didn't know enough to get the knife made for optimal performance I wanted. Again if you read what I have posted on Bladeforums you will realize that this is constantly changing as I learn more about geometry.
For awhile I was very into puukko style knives, convex grinds, full falt grinds, you name it and at one point I was *certain* this was the best way to do it. And it was based on what I had seen up until that time. If you ask me in a year from now I would hope my opinon has changed again as if it hasn't then I have learned nothing.
About makers, no maker can in fact make a 100% user optimal knife unless they have god like knowledge as characteristics are influenced by user skill, method and physical ability. Most makers are clear to point this out, and that refinement can always be made after use and feedback and getting 100% with a NIB blade is pretty much a fluke.
Of course working with a familiar customer is a lot easier as you know how they responded to your design. However people change, get stronger, or more skilled, etc. . The same designs which were optimal for me two years ago are not now.
Steels may be classified under the same name but that does not mean that they have the exact composition, and that they'll react the same way to forging/heat treating methods, so direct comparisons may not be always be suitable.
They are never going to be exact, but this argument was never raised. What was actually argued was that if you have used 52100 from a quality maker you can in fact actually expect similar performance from other competent makers, expecially when they use similar methods and end up with similar blade hardness levels.
You can also readily make generalizations like no 52100 is going to exceed the wear resistance of M2 from a competent maker, no matter how much time and effort anyone puts into 52100. Same with other properties like toughness and ductility.
The specific point I raised was that I had used 52100 from other well respected makers and thus felt comfortable to in general infer the performance I could expect from another such maker.
Will there be differences - of course. Would these differences be so large that the performance would not be comparable - I would argue not. If you do this directly states that one of them is vastly superior to the other.
Your "edge geometry" thread for example, while interesting, does not offer any revolutionary ideas.
This isn't much of a deduction considering that I stated quite clearly *in that exact thread* that the tension bar knife was inspired by coverstions with another maker exactly about such knives, and that further all the work I have done concerning geometry and such has drawn heavily on comments made on rec.knives by Mike Swaim, Alvin Johnson and Joe Talmdage. You can find such references in the reviews as well.
2knife :
What are your credentials?
I have used a fair amount of knives in a variety of ways, mainly in an effort to find out where performance comes from, and have kept notes on performance so as to do so. That is about it.
As for this line of reasoning, look around and see if such arguements are used in a consistent manner.
Look at comments that are positive on Fowlers knives and see if the same requirements are met. Look as well as negative comments on unpopular makers and see if they are defended with such rigor.
I have said lots of positive things about Fowlers knives in the past, I still think they are great knives and have never said otherwise, the 52100 MEUK review would seem to me to be fairly positive and it is a very similar knife execept for the handle.
Someone told me that you are a student...?
Yes, and will be for some time. I was going to teach in the fall, but now seems likely I will be doing post-doc work instead for a variety of reasons.
brownshoe :
In a thread on microserrations, Cliff stated that he disbelieved all knifemaker performance claims. He called David Boye a charlatan for claiming that his 440C dendritic outperforms 440C stock removal. Cliff states microserrations are BS, although Boye has the micrographs to prove their existence. So, by nature, Cliff has stated he won't believe anything from a maker.
This is the thread :
http://www.bladeforums.com/forums/showthread.php?s=&threadid=261784
Check and see how well the above quote represents what was actually said.
In reality, I commented that the high relative cutting ability of Boyes knives comes *mainly* from the edge geometry and rough finish. I also pointed out that there are secondary edge retention characteristics (the self-sharpening effect) which Boyes knives might fare well in. I also did note that yes I would consider all makers are biased about products they are selling or compete with, this isn't limited to knifemakers of course.
I also pointed out that there are knifemakers who I would consider to be unbiased, but I can only make this personal decision because of the very long time I have spent talking to them and the very open way they talk about the faults and limitations of their knives. When I first talked to them of course I didn't have this confidence. I also would not expect someone without this knowledge to make this decision, or even trust my opinion on it.
Again, read the reviews. They are full of comments where past work was corrected for mistakes. About two years ago I started overhauling them in total. They are now full of comments pointing out that many of the methods used to determine performance in the past are far from optimal and can be misleading about various aspects. I guarantee in two years time I will be saying the same thing about the current reviews.
Similar comments can be found in various threads. I argued with Joe talmadge and Jeff Clark for quite some time that there was no difference in "sharpness" among steels, they generally argued for AUS-8A for example taking a sharper edge much easier than AST-34. After looking at this in some detail I found out they were right, made a thread about it.
Brownshoe of course never thinks I am wrong because I don't agree with everyone who disagree with me. Just think about that statement for awhile and see if something doesn't hit you as really funny.
The knife by the way is working fine, two hemp cutting trials done. I thought the grip was really bad at first and made such comments in the rough draft of review (not those words), then taped up the handle so it looked like others I have.
Based on Keiths comments I took the tape off and kept playing with it and it now works well in the left hand in a couple of posisitons, and doesn't feel as bad in the right. Some positions are however not practical, but I have to rewrite the entire grip section of the review now. Thanks for that Keith.
Along those lines, how do you hold the blade with the edge turned up, so that the hump faces the heel of the palm, such as for use as a drawknife, or slitting? Does it work well in the off hand when the hollow faces inward?
-Cliff