To M4 or not to M4...

Discuss Spyderco's products and history.

Would you be in favor of Rex 45 replacing M4 in dealer exclusives?

Yes
11
17%
No
20
32%
NO!
15
24%
Maybe...
12
19%
Huh?
5
8%
 
Total votes: 63

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Albatross
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To M4 or not to M4...

Postby Albatross » Fri Sep 27, 2019 2:56 pm

All you M4 lovers out there, I'm curious; would you take Rex 45 over M4 in dealer exclusives/standard production models, given how similar the steels are? Since Rex 45 is a slight improvement over M4 in edge retention, stain resistance, and ease of sharpening, it seems like a given, but that's just my take.
sal wrote:
Fri Nov 09, 2018 3:01 pm

...But in general, I'm all about high performance, Ergos, safety. That's why I've been accused of "deigning in the dark"...

sal

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abbazaba
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Re: To M4 or not to M4...

Postby abbazaba » Fri Sep 27, 2019 3:06 pm

Tough call. I agree that it might be a slight improvement, but man I love M4. I think just for name recognition's sake, this wouldn't happen anytime soon. Maybe not the perfect example, but M390 still seems to still have a bigger following and a more perceived value than 20cv.

Hopefully we'll see some Pakkawood REX45 Knifecenter exclusives out of Golden :)

JuPaul
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Re: To M4 or not to M4...

Postby JuPaul » Fri Sep 27, 2019 3:11 pm

I answered yes only because I've liked hap40 in my seki models and I'd like the chance to try more rex45 in other golden models (manix!). I have no issues with m4, though.
- Julia

"Be excellent to each other." - Bill S. Preston, Esq.

tjsblade
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Re: To M4 or not to M4...

Postby tjsblade » Fri Sep 27, 2019 3:47 pm

No. While I don't have anything in Rex45, I really love the way m4 sharpens and performs. One of my favorites.

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wrdwrght
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Re: To M4 or not to M4...

Postby wrdwrght » Fri Sep 27, 2019 3:53 pm

No. A new steel doesn’t lessen the proven goodness of an old one. But, I am game for more Rex45.
Marc <— a mere data-point

RECENT ARRIVAL: 10V PM2. ON RADAR: Lil’ Native slipjoint. IN DREAMS: 4V Military2 stop-lock; 52100 Shaman; Vanax Chief.

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JonLeBlanc
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Re: To M4 or not to M4...

Postby JonLeBlanc » Fri Sep 27, 2019 4:03 pm

wrdwrght wrote:
Fri Sep 27, 2019 3:53 pm
No. A new steel doesn’t lessen the proven goodness of an old one. But, I am game for more Rex45.
Here, here
My collection so far: 52100 Military (2); 52100 PM2 (2); 52100 Para3; Stretch2 V-Toku; KnifeWorks M4 PM2; BentoBox M390 PM2; BentoBox S90V Military; Police4 K390; S110V PM2; SS Delica AUS-6; Wayne Goddard Sprint VG-10
Wish list: Hundred Pacer; Sliverax; Mantra; 52100 PM2 SE; Kapara

Sumdumguy
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Re: To M4 or not to M4...

Postby Sumdumguy » Fri Sep 27, 2019 4:23 pm

I disagree that REX45 has more corrosion resistance than M4.

My REX45 PM2s blade was the same color as the handle within 2 hours at work. M4 on the otherhand, has only the slightest patina after a year of use.

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ferider
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Re: To M4 or not to M4...

Postby ferider » Fri Sep 27, 2019 4:29 pm

Albatross wrote:
Fri Sep 27, 2019 2:56 pm
Since Rex 45 is a slight improvement over M4 in edge retention ...
I disagree. Rex 45 is harder, but wears quicker. At least with my Spydercos.

So No.

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ferider
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Re: To M4 or not to M4...

Postby ferider » Fri Sep 27, 2019 4:33 pm

JuPaul wrote:
Fri Sep 27, 2019 3:11 pm
I answered yes only because I've liked hap40 in my seki models and I'd like the chance to try more rex45 in other golden models (manix!). I have no issues with m4, though.
My 4V Manix behaves kind of similar to my Rex 45 knives (hardness and wear resistance). Obviously geometries are dramatically different, just saying.

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jpm2
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Re: To M4 or not to M4...

Postby jpm2 » Fri Sep 27, 2019 4:38 pm

All of my m4 knives are excellent performers, not a questionable one in the bunch, so maybe.
But if I get several more rex45 knives that perform as well as the only one I presently have, then yes.

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knivesandbooks
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Re: To M4 or not to M4...

Postby knivesandbooks » Fri Sep 27, 2019 5:01 pm

I want some REX 45 knives or just one.
But, I'd rather have M4. Old tried and true.
I own an assisted knife and am embarrassed to admit I enjoy it.

JuPaul
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Re: To M4 or not to M4...

Postby JuPaul » Fri Sep 27, 2019 5:12 pm

ferider wrote:
Fri Sep 27, 2019 4:33 pm
JuPaul wrote:
Fri Sep 27, 2019 3:11 pm
I answered yes only because I've liked hap40 in my seki models and I'd like the chance to try more rex45 in other golden models (manix!). I have no issues with m4, though.
My 4V Manix behaves kind of similar to my Rex 45 knives (hardness and wear resistance). Obviously geometries are dramatically different, just saying.
I'd also be interested in another run of the 4v Manix (or a st. Nick's version). I love my cruwear Manix and I've read that 4v and cruwear have similar properties, but with 4v being slightly less rust-resistant. I'm just now trying out 4v.
- Julia

"Be excellent to each other." - Bill S. Preston, Esq.

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Mattysc42
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Re: To M4 or not to M4...

Postby Mattysc42 » Fri Sep 27, 2019 5:17 pm

Switch M4 to k390 then hell yes. Otherwise no.
Currently pondering the mysteries of the universe, such as: Who is this Nuff person, and why is he quoted for saying just about everything?

Top 5 knives I’ve owned: Serrated Caribbean Leaf, Shaman, Manix XL, ZDP-189/CF Caly 3.5, Native LW.
Top 5 steels I’ve owned: LC200N, K390, CPM S90V, M390, CPM M4.
Top 3 steels I want more of: M390 class, A11 class (including K390), serrated LC200N.

bdblue
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Re: To M4 or not to M4...

Postby bdblue » Fri Sep 27, 2019 7:23 pm

M4 is my favorite Spyderco steel, I have 5 of them for various uses. IMO a replacement for M4 should have similar edge-holding but better toughness. Otherwise why bother.

aaronkb
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Re: To M4 or not to M4...

Postby aaronkb » Sat Sep 28, 2019 1:06 am

M4 is by far my favorite steel, but I haven’t had the chance to test Rex45 yet. Really looking forward to the rumored shaman sprint.

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Pelagic
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Re: To M4 or not to M4...

Postby Pelagic » Sat Sep 28, 2019 7:11 am

Mattysc42 wrote:
Fri Sep 27, 2019 5:17 pm
Switch M4 to k390 then hell yes. Otherwise no.
Exactly.
Pancake wrote:
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dj moonbat
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Re: To M4 or not to M4...

Postby dj moonbat » Sat Sep 28, 2019 7:39 am

Would it be cheaper? Otherwise, no. Ain't nothin' broke with M4.

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steelcity16
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Re: To M4 or not to M4...

Postby steelcity16 » Sat Sep 28, 2019 8:29 am

Where is the option to replace M4 with Cruwear?? :D Jade plus DLC Cruwear would be been a dream combo for me.
:spyder: CRU-CARTA THEM ALL! :spyder:

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jpm2
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Re: To M4 or not to M4...

Postby jpm2 » Sat Sep 28, 2019 8:33 am

steelcity16 wrote:
Sat Sep 28, 2019 8:29 am
Where is the option to replace M4 with Cruwear?? :D
I think the OP is looking at a possible upgrade to m4, not downgrade. :D

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Albatross
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Re: To M4 or not to M4...

Postby Albatross » Sat Sep 28, 2019 8:39 am

Sumdumguy wrote:
Fri Sep 27, 2019 4:23 pm
I disagree that REX45 has more corrosion resistance than M4.

My REX45 PM2s blade was the same color as the handle within 2 hours at work. M4 on the otherhand, has only the slightest patina after a year of use.
Rex 45 has less carbon and the roughly the same chromium, you shouldn't see more rust, you should see less. The general consensus is that Rex 45 is less prone to rust than M4. My own experience, as well as others from this forum, have shown this to be true.


ferider wrote:
Fri Sep 27, 2019 4:29 pm
Albatross wrote:
Fri Sep 27, 2019 2:56 pm
Since Rex 45 is a slight improvement over M4 in edge retention ...
I disagree. Rex 45 is harder, but wears quicker. At least with my Spydercos.

So No.
My own testing, as well as 4 others that I'm aware of, show Rex 45 with slightly better edge retention. Maybe it's possible you got one of the "softer" ones? Maybe it's not at 66-67 hrc, but 64-65. There were a few that were found to be in the 64-65 range, it's bound to happen from time to time. If you have multiple Rex 45 knives and and find M4 stays sharp longer, then I would assume you have a stellar example of M4.
sal wrote:
Fri Nov 09, 2018 3:01 pm

...But in general, I'm all about high performance, Ergos, safety. That's why I've been accused of "deigning in the dark"...

sal


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