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Same rule as the Sebenza huhYou guys need to use one of Yun's knives before you assume anything about the steel. The edge geometry is done in a way that I am not worried about my edge chipping. The two that I own have an edge that would be considered convex. This steel with this edge geometry is a work horse. They just keep cutting and every so often a quick stropping is all that is needed.
That is my sentiments exactly regarding the steel and the clad steel at that.
If Yun offered different steel and unclad steel in a different variety I might already have an order in with him.
Too bad for me.
For detailed account of the testing and its results, including micrographs, see the article linked above, but in short, soft edges failed miserably, and I didn't observe a single chip on 67HRC ZDP-189 steel b12 spearpoint edge. Obviously, a lot depends on cutting, and heat treatment is crucial, just the Rockwell hardness doesn't tell the whole story, two knives from the same steel, at the same hardness may behave very differently because of the differences in heat treatment, but when it's done right, ZDP-189 is not all that brittle as some users report.
Oooh, I really like that. Looks like he's not taking orders for new custom work at the moment, but I'll definitely try to grab a spot on the list when he opens his books again. Thanks for the pointer! :thumbup:I didn't go through the whole thread, but I would check out the Les George FM-1.
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I always liked the look of the Yuna too.
This one is far more convincing:
http://www.youtube.com/watch?v=eQsatmsxvdA
Not sure if the blade is laminated though.
The reports seem to be conflicting anyways. I believe Ankerson had a picture of his micro-chipped Endura after the rope cutting, though I can't seem to find it.
But given the vid of the guy hammering his kitchen knife, I have this ugly thought I'm reluctant to bring up. If anyone remembered, I believe Sal had mentioned a bad heat treat on the ZDP mules. I'm sort of wondering if the heat treat on those Enduras also had the same issue. Mine was technically sort of old as it was one of the saber ground ones, though Ankerson's FFG Endura should have been newer.
Still, it's curious. ZDP-189 at Rc 65-67 should by all means be brittle given the elemental composition. With 3% Carbon and 20% Chromium, it should be chalk full of carbides. I know CPM-M4 is plenty tough at Rc 62-64, but it has half the carbon content and only 4% Chromium.
Though I believe Gator97 explained it best here:
Just boggles the mind.
Well what I can tell you is that I had the same Strider itch and was on the fence. I always over research my purchases because I hate buyers remorse. I generally like medium to small knives for EDC and was worried that the SNG would be too large for me but in fact it is just perfect so If you like larger knives the SMF should be just right. I waited and finally found one used in excellent shape at a great price from a very reputable seller. The cherry on top was that all the specs checked out...blade centering etc. and it had a reprofiled and polished edge which is exactly what I was hoing to do anyway.
Yuna! I forgot about Yun. Thanks for the reminder.