Random Thought Thread

Discussion in 'Carothers Performance Knives' started by Nathan the Machinist, Jul 17, 2017.

  1. SharpPancake

    SharpPancake Gold Member Gold Member

    232
    Dec 30, 2018
    Ok, I can understand that.

    Me, I would be hANGRY if I didn´t have breakfast. I talked about eating breakfast a few times with my students, and its crazy how many young people (13-18) don´t eat breakfast.
     
    bluemax_1, Mike157, woodysone and 2 others like this.
  2. fonedork

    fonedork Platinum Member Platinum Member

    Jul 7, 2011
    nandok, duramax, woodysone and 7 others like this.
  3. bluemax_1

    bluemax_1 Gold Member Gold Member

    Jan 17, 2014
    That's pretty cool! Are there any sort of quals needed, or is it one of those, "I'll/we'll pick the best 'stories' from candidates" type deal?
     
  4. fonedork

    fonedork Platinum Member Platinum Member

    Jul 7, 2011
    There are two very vague criteria. You have to be able to advance "whatever activity" you're into by going to space. And "be willing and able to support other crew members who share similar aspirations." Man I want to go to space.
    https://www.cnbc.com/2021/03/02/yus...lic-seats-on-spacex-starship-moon-flight.html
     
    duramax, woodysone, WValtakis and 2 others like this.
  5. bluemax_1

    bluemax_1 Gold Member Gold Member

    Jan 17, 2014
    I wonder how many people will be sending this to the Japanese billionaire?
    :p


    Also pretty funny that the radio station I was tuned to just yesterday, mentioned the Voyager Station (first space hotel in lower earth orbit, slated to open 2027).
     
    duramax, woodysone, Mike157 and 2 others like this.
  6. jlauffer

    jlauffer Tempt not the Blade Platinum Member

    Apr 11, 2016
    Why is it called a weathervane when it only indicates wind direction?o_O
     
  7. moparsbob

    moparsbob Gold Member Gold Member

    850
    May 6, 2014
    You don’t need a weatherman to know which way the wind blows
     
  8. Jsega51

    Jsega51 Gold Member Gold Member

    Feb 11, 2015
    Lick a finger and stick it in the air!
     
    Odog27 and Mike157 like this.
  9. Casinostocks

    Casinostocks Factotum Gold Member

    Mar 20, 2016
    If you win, will you try to sneak one of your CPKs to Space? If so, which one will be the first ever CPK ro scape the Earth’s gravity?

    Also, I have often wondered about how knives perform on other planets with thinner atmosphere and weaker gravity? I trust that you would hijack that vessel once in orbit and pilot it to Mars to study and investigate my curiosity.
     
    Odog27, duramax, Mike157 and 2 others like this.
  10. fonedork

    fonedork Platinum Member Platinum Member

    Jul 7, 2011
    Folder, they aren’t blasting off til 2023
     
    Odog27, woodysone, duramax and 6 others like this.
  11. Casinostocks

    Casinostocks Factotum Gold Member

    Mar 20, 2016
    The MS folder is ready to blast off as of now. The CPK folder better be ready by the time you blast off comrade cosmonaut Eee!
     
    Odog27, woodysone, duramax and 2 others like this.
  12. Burke

    Burke Gold Member Gold Member

    Feb 25, 1999
    If it’s wet - it’s raining. If there’s snow on it - it’s snowing. If it’s gone - high winds.
     
  13. TRfromMT

    TRfromMT Gold Member Gold Member Basic Member

    Jan 4, 2016
    While you couldn't pay me to go space**, I get to work on space stuff every day for these companies. I'll eventually have hardware on one of the moon-shots, so I'll try and do right by ya.

    I've been at this job just over a year and am having so much fun there. Building stuff that fires the bullet at the moon is awesome.


    ** I used to be a flight test engineer and used to get motion sick from all the flying (we hardly ever kept things straight and level), so I really HATE the zero-g stuff any more.
     
    Last edited: Mar 3, 2021
  14. vkp78

    vkp78 Gold Member Gold Member

    329
    May 6, 2014
    Since its probably stupid question time, moving my questions from the ANAQ thread. Thanks for the recs gentlemen. I picked up the descriptions and how they test for hardness and toughness in the lab. But in real use, how do you separate the two? Like for example , if you have two different steels of unknown heat treat in your hands, and if you used both of them to the exact same degree, what would you see on the edge to say knife A is hard, less tough, knife B is tough, less hard or knife A is hard and tough? And comment on edge stability, wear resistance
    And I think Nathan once said that edge stability and wear resistance are not the same , hence D3V shining in real world use....
     
    Odog27 and woodysone like this.
  15. Nathan the Machinist

    Nathan the Machinist KnifeMaker / Machinist / Evil Genius Moderator Knifemaker / Craftsman / Service Provider

    Feb 13, 2007
    Edge retention and wear resistance are not the same thing. In fact, edge retention and edge retention measured in catra testing are not the same thing. Lightly sawing across abrasive cardstock measures edge retention in a very specific use that is not necessarily representative of normal use. In reality, knives do not normally go dull primarily from abrasive wear unless you're cutting leather or cardboard etc. This is where edge stability affects edge retention. If your knife goes dull because mechanical loss of the edge from lateral forces or impact causing roll or microchipping or other forms of material loss that are not abrasive in nature then your knife is going dull from less than optimal edge stability, not low wear resistance.

    Low hardness contributes to low edge stability. Obviously. But so does areas of low strength in the matrix such as retained austenite, RA that has decomposed into other non-martensitic structures such as bainite or pearlite or even secondary martensite with reduced cohesion to the surrounding matrix. Sometimes carbides can reduce edge stability. Nickel certainly does. Free chromium isn't helping. Pretty much anything that behaves like the perforations in a postage stamp can make an edge flake, roll, chip, mush. This is one reason why S30V was such a bummer, it was a bear to sharpen and it did not reward this effort with good edge retention.

    Since a hard clean matrix with minimal inclusions and maximal uniformity tend to give the best edge stability, you will see the simple steels like 52100 and W2 outperform the more complex steels in this area. And since edge stability is a critical component in edge retention you will often see somewhat wear resistant simple steels outperform highly wear resistant complex steels in many tasks. This is one reason why I like AEBL. It has fantastic edge stability which gives it pretty good edge retention in most applications despite mediocre wear resistance. 3V, given the industry standard heat treat, does not have fantastic edge stability (carbon lean martensite, intentionally stabilized retained austenite and secondary carbides due to the slow quench, shallow quench, and use of the secondary hardening hump all done to minimize part growth and distortion risk) which sort of defeated the purpose of using a tough wear-resistant steel in rough use applications. This was the reason the Delta protocol was developed, to address its tendency to have a chippy mushy edge and bring it more in line with the simpler steels in a way that it was capable of due to its chemistry.
     
  16. vkp78

    vkp78 Gold Member Gold Member

    329
    May 6, 2014
    Had to read it a few times but a most excellent write up and one which will finally stick in my head.
    So is it fair to say edge stability and wear resistance contribute to edge retention with edge stability being the much bigger factor and more indicative of real world use?
    Also typo in line 2.....
    ^ This should be stickied some where and thank you for your time Nathan!
     
    Mike157, Odog27, woodysone and 2 others like this.
  17. vkp78

    vkp78 Gold Member Gold Member

    329
    May 6, 2014
    Yet another read and huh, so it wasnt a typo in line 2.
    I am going to keep it simple now- take money, give knife
     
  18. SwarthyGnome

    SwarthyGnome Gold Member Gold Member

    347
    Nov 1, 2018
    A4E097C4-CB45-4CE9-86C1-4C5C260E1CB7.jpeg
    sub looked a little dead midday. Here is my EDC2 from my work bag and a cartoon a patient brought in.
     
  19. bluemax_1

    bluemax_1 Gold Member Gold Member

    Jan 17, 2014
    BTW, is it just me, or has anyone else noticed BF being noticeably laggier 24/7 (not just during CPK sales) since sometime last year?

    I'm seeing lag on ANY/EVERY page loading, that I don't recall from 2019 or earlier. I don't see this lag on other sites or forums, so I don't think it's my internet connection (Speedtest shows ~110Mbps DL at home. Phone data speed obviously varies).
     
  20. steelcitysixteen

    steelcitysixteen Gold Member Gold Member

    491
    Dec 12, 2017
    ^ yes, and the whole site was down for awhile yesterday
     
    woodysone, Odog27 and vkp78 like this.

Share This Page