The "Ask Nathan a Question" Thread

Murphjd25 said:
I’ve chopped down my wet shit...
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iu
 
Jeff Dickinson said:
Nathan the Machinist Nathan the Machinist I’ve often regretted not opting for the dagger grind modified fuller option on my shiv preorders. Primarily, because I was unsure how far up the spine the “double-edge” would go? Is it a full dagger grind up the spine or just a couple inches?? Thanks
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The tip will have a dagger grind, it won't be the full rear edge
 
This might be one of those questions that gets asked alot . I free hand sharpen alot and can consistently get shaving sharp . I've gotten lucky twice with tree topping edges . Bench stones and strops . Wide variety. My question is why does the apex micro chip . Am I using too much pressure or are some steels ,like k390 , more prone to chip . I've heard , geometry cuts , but thin edges seem fragile . I've noticed alot more discussions on edge stability. So, I figure , this is well known . I guess I'm at the point of buying a wicked edge out of sheer frustration. I do appreciate the work you guys do pushing the edge to its limits .
 
Hawg2wild said:
This might be one of those questions that gets asked alot . I free hand sharpen alot and can consistently get shaving sharp . I've gotten lucky twice with tree topping edges . Bench stones and strops . Wide variety. My question is why does the apex micro chip . Am I using too much pressure or are some steels ,like k390 , more prone to chip . I've heard , geometry cuts , but thin edges seem fragile . I've noticed alot more discussions on edge stability. So, I figure , this is well known . I guess I'm at the point of buying a wicked edge out of sheer frustration. I do appreciate the work you guys do pushing the edge to its limits .
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Are you having an issue with my edges microchipping or some other knife?
 
Nathan the Machinist said:
Are you having an issue with my edges microchipping or some other knife?
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I honestly haven't looked under magnification. But I have a spyderco pm2 in k390 , I've never seen it NOT have microchipping . Your knives rock . Chopped a 6 inch oak branch WITH behemother that my wife was worried about and was blown away with how easy it was . Cleaned sap off , inspected edge , I honestly couldn't see or feel with my fingernail any damage . Stropped on horween leather and if anything it was sharper . So I left it alone . I figured I'd quit while I was ahead . Sorry to have caused you any concerns.
 
Hawg2wild said:
I honestly haven't looked under magnification. But I have a spyderco pm2 in k390 , I've never seen it NOT have microchipping . Your knives rock . Chopped a 6 inch oak branch WITH behemother that my wife was worried about and was blown away with how easy it was . Cleaned sap off , inspected edge , I honestly couldn't see or feel with my fingernail any damage . Stropped on horween leather and if anything it was sharper . So I left it alone . I figured I'd quit while I was ahead . Sorry to have caused you any concerns.
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Lots of steels have poor edge stability. Lots of reasons for it. A person could write a book about it.

I'll try to write a thoughtful response when I can get a moment.
 
StoneAndSteel said:
This is why I love this thread. As long as Nathan uses small words I really appreciate the explanations of how steels work.
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I've been reading Dr. Larrin Thomas. I have a headache. Toughness versus hardness , carbide types and size , etc etc etc . I'm beginning to think steel development is as much an art as a very complex science. Yep , headache. Still fascinating. I wonder if microchipping is the same as macrochipping. Just on a smaller scale . I guess the straight razor guys were right about light strokes on sharpening steel, too bad it doesn't work on , never mind .
 
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