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Benchmade 581 Edge Retention

S

Strong-Dog

Joined
Mar 1, 2014
Messages
435
To anyone who has this knife, how does the edge retention compare to other knives in M390? I recently got one used for a good price, but have no idea when it was made. I remember other people having problems with Benchmade's M390, and don't know if they fixed those issues, if it was an isolated incident, or if I should be concerned. Thanks
 
I sold a friend a 581 and it stayed very sharp even with very frequent use. M390 is a wonderful steel, and benchmade seems to have done a good job at least with that one instance.
 
I had not heard of problems with M390 from any manufacturer. It's been solid from Spyderco, ZT, & Benchmade.
 
RevDevil said:
I had not heard of problems with M390 from any manufacturer. It's been solid from Spyderco, ZT, & Benchmade.
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If I remember correctly, there were some problems (or "problems", as it's subjective) with M390 at least in the platform of the Benchmade MPR. I could be wrong, but I definitely remember some people having "issues" with it. Whether or not they were actual problems idk
 
You really can't gauge the "quality" of a steel until you have sharpened it two or three times. To many variables at play with the factory edge.
 
My 586 is holding its edge terrifically. If it didn't, I would sell it in a heartbeat, because it is a pain to sharpen. It also took surprisingly little damage when I slipped cutting a zip tie and stabbed my steel-plate bumper with it.
 
CloudsRest said:
My 586 is holding its edge terrifically. If it didn't, I would sell it in a heartbeat, because it is a pain to sharpen. It also took surprisingly little damage when I slipped cutting a zip tie and stabbed my steel-plate bumper with it.
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When you are dealing with really high vanadium steels, diamonds are your friend.
 
I got a 581, and think it's just wonderful. One of my favorite Benchmades. m390 takes a nice edge, too.
 
Mine seems to hold a good edge for some time. It s a terrific slicer. The blade grind with that steel is the main reason I like that knife. Ergonomics are average. Deassisted mine.
 
whp said:
Mine seems to hold a good edge for some time. It s a terrific slicer. The blade grind with that steel is the main reason I like that knife. Ergonomics are average. Deassisted mine.
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I don't know why it was ever assisted to begin with. The blade flies open very nicely without the spring.
 
It's the only Benchmade that I have, and although I've used it often, I can't say that I've used it hard. I've reprofiled it on the Wicked Edge to 15 degrees per side, and have just stropped it since. It stays sharp for a very long time but I've just used it to cut food in the office mostly, and some fruit.

I also ended up de-assisting it.
 
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