I fully agree and this discussion is making me want to give k390 a go. I really should have picked up one of those Urbans just to play with the steel.Evil D wrote:I haven't tried K390 yet but I've had a few in M4 and it's one of my favorite steels, partly because of how easily I can get it really sharp so I find this to be pretty encouraging.Ncmiked wrote:I think it's easier to get that sticky sharp feel with K390.
CPM M4 vs K390
- Surfingringo
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Re: CPM M4 vs K390
Re: CPM M4 vs K390
Why don't you ? They are quite available at a few vendors and at 65$ it's a steal.Trust me, you'll love the steel and the Urban is a superb compact little folder.K390 is second close to CPM-Cruwear as my favorite non-stainless steel.Surfingringo wrote:I fully agree and this discussion is making me want to give k390 a go. I really should have picked up one of those Urbans just to play with the steel.Evil D wrote:I haven't tried K390 yet but I've had a few in M4 and it's one of my favorite steels, partly because of how easily I can get it really sharp so I find this to be pretty encouraging.Ncmiked wrote:I think it's easier to get that sticky sharp feel with K390.
Marius
" A mind all logic is like a knife all blade. It makes the hand bleed that uses it "
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" A mind all logic is like a knife all blade. It makes the hand bleed that uses it "
( Rabindranath Tagore )
Proud member of the old school spyderedge nation
- Doc Dan
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Re: CPM M4 vs K390
KW has them in stock. I, and a lot of others, feel this is one of the best purchases we have made. It is a great design, but the steel kicks it into high gear.Surfingringo wrote: I fully agree and this discussion is making me want to give k390 a go. I really should have picked up one of those Urbans just to play with the steel.
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Follow the Christ, the King,
Live pure, speak true, right wrong, follow the King--
Else, wherefore born?" (Tennyson)
NRA Life Member
Spydernation 0050
Re: CPM M4 vs K390
Sounds all promising, the so far experiences with K390. I wonder how Maxamet fits in next to M4 and K390. I finally bit the bullet and reprofiled my edge from 38 back to 30 degrees inclusive. Took a while to get there, but my Police is freaking slicing-hairsplitting now...
Re: CPM M4 vs K390
I have to agree. The Urban is an excellent design on its own, but with K390 it becomes a truly outstanding value at only $65.Doc Dan wrote:I, and a lot of others, feel this is one of the best purchases we have made. It is a great design, but the steel kicks it into high gear.
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Re: CPM M4 vs K390
Seriously, get one! I actually prefer K390 right now as it doesn't rust nearly as fast as m4.
Re: CPM M4 vs K390
Ditto.Doc Dan wrote:KW has them in stock. I, and a lot of others, feel this is one of the best purchases we have made. It is a great design, but the steel kicks it into high gear.Surfingringo wrote: I fully agree and this discussion is making me want to give k390 a go. I really should have picked up one of those Urbans just to play with the steel.
Great knife. I had one confiscated at a tourist site in Rome last summer, and I immediately ordered a replacement from my phone.
Re: CPM M4 vs K390
I'm really surprised there's K390 Urbans still in the retail shops.
Re: CPM M4 vs K390
I used my K390 to cut holes in aluminum gutters for the down spouts, steel didn't blink.
Re: CPM M4 vs K390
I have 2 maxamet blades. I can engrave all my m4 and k390 blades with them.toomzz wrote: I wonder how Maxamet fits in next to M4 and K390.
Re: CPM M4 vs K390
I wish there was a maxamet UKPK, though. I don't have any Maxamet for EDC in non-locker jurisdictions.
- curlyhairedboy
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Re: CPM M4 vs K390
this is quite impressive!jpm2 wrote:I have 2 maxamet blades. I can engrave all my m4 and k390 blades with them.
EDC Rotation: PITS, Damasteel Urban, Shaman, Ikuchi, Amalgam, CruCarta Shaman, Sage 5 LW, Serrated Caribbean Sheepsfoot CQI, XHP Shaman, M4/Micarta Shaman, 15v Shaman
Fixed Blades: Proficient, Magnacut Mule
Special and Sentimental: Southard, Squarehead LW, Ouroboros, Calendar Para 3 LW, 40th Anniversary Native, Ti Native, Calendar Watu, Tanto PM2
Would like to own again: CQI Caribbean Sheepsfoot PE, Watu
Wishlist: Magnacut, Shaman Sprints!
Fixed Blades: Proficient, Magnacut Mule
Special and Sentimental: Southard, Squarehead LW, Ouroboros, Calendar Para 3 LW, 40th Anniversary Native, Ti Native, Calendar Watu, Tanto PM2
Would like to own again: CQI Caribbean Sheepsfoot PE, Watu
Wishlist: Magnacut, Shaman Sprints!
Re: CPM M4 vs K390
I guess folks have different experiences. I don't have either steel, but my brother has the Urban in K390 and his experience is that K390 is more prone to corrosion than M4.
Re: CPM M4 vs K390
Well as far as rust goes I think the person is as much of a variant as the steel. There are guys here who can't live with anything less than H1 because they can rust S110V just from carrying it in their pocket. Other guys seem to be able to keep carbon steel from rusting even in salt water. Care plays as much a role as something as simple as the potency of a person's body sweat.Chumango wrote:I guess folks have different experiences. I don't have either steel, but my brother has the Urban in K390 and his experience is that K390 is more prone to corrosion than M4.
All SE all the time since 2017
~David
~David
Re: CPM M4 vs K390
Mine must be fairly non corrosive because HAP-40 doesn't seem to have issues in my pocket. I've had spotting on S30v frequently and AUS-8 once though...
Re: CPM M4 vs K390
True, but for the same person who uses both M4 and K390 and sees more staining with K390, it is a comparison of steels, not of body chemistry between different people.Evil D wrote:
Well as far as rust goes I think the person is as much of a variant as the steel. There are guys here who can't live with anything less than H1 because they can rust S110V just from carrying it in their pocket. Other guys seem to be able to keep carbon steel from rusting even in salt water. Care plays as much a role as something as simple as the potency of a person's body sweat.
Re: CPM M4 vs K390
Chumango wrote:True, but for the same person who uses both M4 and K390 and sees more staining with K390, it is a comparison of steels, not of body chemistry between different people.Evil D wrote:
Well as far as rust goes I think the person is as much of a variant as the steel. There are guys here who can't live with anything less than H1 because they can rust S110V just from carrying it in their pocket. Other guys seem to be able to keep carbon steel from rusting even in salt water. Care plays as much a role as something as simple as the potency of a person's body sweat.
Yeah that's true, I guess it's possible their sweat reacts differently to steels than other people's? I think it's most likely to do with more random things. We see the same conflict of opinion sometimes with edge retention and toughness too.
All SE all the time since 2017
~David
~David
Re: CPM M4 vs K390
In my brother's case it was not a matter of sweat, it was a matter of cutting different things and seeing staining as a result. In his use, M4 is more corrosion resistant.
Re: CPM M4 vs K390
What M4 blade does your brother have.