My Manix 2 Maxamet Just Snapped !!

Discussion in 'Spyderco' started by OTF556, Jul 7, 2020.

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  1. TheFactor

    TheFactor Life is good ! Platinum Member

    Feb 26, 2015
    Oh Snap !!!!
     
    353, Organic556, Yo Mama and 2 others like this.
  2. Corey.L

    Corey.L

    57
    Jun 9, 2020
    Nice
     
    TheFactor likes this.
  3. Anderdale

    Anderdale Gold Member Gold Member

    833
    Nov 21, 2015
    Is it possible it could be a fake?

    OP purchased on amazon and I’ve heard buying knives on there is sketchy.
     
    Oloung1 and John_0917 like this.
  4. Karl H

    Karl H

    86
    Apr 24, 2020
    If OP sends both pieces to Spyderco, they should be able confirm what the likely cause of failure is.

    That being said, Maxamet is a low-toughness material and I would surprised if Spyderco finds a material defect or a counterfeit.

    Does anyone know if Spyderco provides any special warnings in the box regarding uses that might break the blade?
     
  5. John_0917

    John_0917 Gold Member Gold Member

    Apr 15, 2014
    With all the challenges they have had in manufacturing these, I would not be surprised if it has some major defect in the steel that wasn’t visible before. The Manix 2 blades have been tested as high as 70HRC on some examples. The next closest hardness steel Spyderco has produced is Rex 45 at 67 and ZDP at about 66; but neither of those have the wear resistance. ZDP is close but has even less toughness, Rex has good toughness but doesn’t have that level abrasive resistance.
     
  6. Spydergirl88

    Spydergirl88 Gold Member Gold Member

    747
    Dec 3, 2015
    Zero chance
     
    marrenmiller and 353 like this.
  7. SubMicron

    SubMicron

    335
    Feb 2, 2020
    I just looked through what was included with my Native 5 Maxamet. In the box there was an insert that talks about Maxamet but no warnings were given regarding toughness.

    Despite that, before purchasing Maxamet I already knew what I was getting and what it's weaknesses are. For those reasons I've used my knife accordingly and have had zero problems with Maxamet. I also enjoy sharpening it... it's easy with my set up.

    If I was going to use a knife to score drywall, I'd use a different steel from my Spyderco collection.

    I'm fully aware that a lot of people say that a knife shouldn't be used to cut drywall. That's true for anything though, even cardboard.

    My thinking is that if it can be cut, then a knife can be used.

    A Manix is an attractive cutting tool for scoring, and a lot of things, due to the profile. For hard use or high pressure, I'd pick a very tough steel where I can operate care free, such as 4V, M4, REX-45. I'd think that 10V/A11 and also K390 might also do good for drywall.

    I do think Maxamet knives should include a warning about lateral pressure and impact forces.
     
    Last edited: Jul 11, 2020
    Organic556 and Karl H like this.
  8. nephron

    nephron Gold Member Gold Member

    Aug 3, 2017
    So nobody thinks that without that huge hole in the blade it might have not happened, I know its blasphemy, but I always thought the hole could be smaller and work as well(and add some strength).
     
  9. mag1

    mag1 Gold Member Gold Member

    Sep 26, 2010
    Wtf
     
    Sharp & Fiery likes this.
  10. Karl H

    Karl H

    86
    Apr 24, 2020
    I agree. I think it would probably be in everyone's best interest to include a warning.
     
  11. Karl H

    Karl H

    86
    Apr 24, 2020
    Spyderco could "easily" design the blade to withstand much larger loads. It is interesting that Spyderco hasn't done that.

    It would definitely create value for the customer to tweak the blade grinds for different steels, like they seem to do for H1.
     
  12. Bill1170

    Bill1170

    Dec 20, 2007
    It is well known here that performance while cutting is the primary objective at Spyderco. Designing a blade to withstand much larger loads is easy. Doing that while preserving performance is not at all easy.
     
    Ippon98, 353 and Eli Chaps like this.
  13. Karl H

    Karl H

    86
    Apr 24, 2020
    Performance while cutting is somewhat compromised, when the blade has broken off. There are a lot of ways that the blade can be strengthened, without significantly compromising cutting performance. The only thing they would need to do is strengthen / reduce stress concentrations at the transition to the ricasso. A gradual transition from the ricasso, without a sharp corners or giant holes, is standard practice throughout the rest of knife industry.
     
    insta9ves likes this.
  14. inkynate

    inkynate

    Sep 4, 2010
    If there was no significant lateral loading, I guess it may have just been the odd lemon with a defect in that specific bit of steel.

    If there was lateral loading, that is absolutely the weak point where you'd expect failure to occur. As noted, Maxamet is not an alloy you want to pry with. Iirc, a few years ago there was a thread on the factory forum where someone pried with an S110V Manix 2 lw and had similar looking results.
     
    SubMicron likes this.
  15. bdmicarta

    bdmicarta Gold Member Gold Member

    Feb 16, 2012
    Without the hole it would be stronger, whether the OP would have snapped it or not would be harder for us to know. For me the hole couldn't be any smaller and still work as well. I believe knives like the Endura have smaller holes, and they are harder for me to operate.
     
    nephron likes this.
  16. yablanowitz

    yablanowitz

    Apr 14, 2006
    Considering how much drywall I've cut with mine, I suspect other factors at work. Send it to Spyderco so they can evaluate the problem. Do it for the sake of others if not for yourself. They could find it was a fluke, they could find an ongoing problem. No one will ever know unless they have the knife in hand to examine.
     
    AF, Ippon98, inkynate and 3 others like this.
  17. SubMicron

    SubMicron

    335
    Feb 2, 2020
    Regarding the hole size: No doubt it would be stronger with a smaller hole, however it would definitely be less usable for some people.

    As far as designing it so it's stronger, I feel they have done that already by providing different steel options.

    There's plenty of examples of Maxamet surviving things that you'd expect would break it. Simultaneously there's situations such as this one.

    Probably no one will ever know if the cause of this failure was a manufacturing defect or an undisclosed event by the end user. Was there a previous impact prior to this? Is this the result of crack propagation? Other scenarios exist such as the retailer taking a return and unknown to them when they resold it, the person who returned it had done something that caused this to happen.
     
    Ippon98 and nephron like this.
  18. ReignChaser

    ReignChaser

    43
    May 26, 2019
    If somehow a Maxamet fake existed, I think it would be a lot less likely to break since it wouldn't be nearly as hard.
     
    Bill1170, jacksterp, cali and 3 others like this.
  19. Roy Batty

    Roy Batty Y'all can sling load DEEZ NUTS Platinum Member

    May 25, 2016
    I’m sorry but I’m not buying it.
    There’s no way that happened cutting drywall, definitely not “scoring” it. You had to have done something more than that with it.
    For all we know it was clamped down in a vice and snapped off.
     
    Last edited: Jul 12, 2020
    matt009au likes this.
  20. Cvrobinson

    Cvrobinson Going to hell, I’ll be back, anyone need anything Gold Member

    Dec 19, 2017
    Just as you said Jonny, have a friend in NZ, exact same experience. Had used the knife, not abused, and then, one day, snap, when he least expected it, normal cutting.
    On a lighter note, the hole didn’t break, only the steel around it:p:p:p:D
     
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