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  1. tomhosang

    S30V, S90V or rex 45 native chief?

    Carbide size isn't really a factor in what abrasives you use, more so carbide type. REX 45 is full of high hardness carbides (vanadium, tungsten, molybdenum) that definitely require diamonds to get the most out of it.
  2. tomhosang

    Any Interest in a BESS Sharpness Competition?

    Man, I wish I would've seen this earlier. I totally would have been in. Can't wait to see how this plays out!
  3. tomhosang

    All Sold. Thx BF’s

    What's the blade steel on the slim midi?
  4. tomhosang

    Which PM2 steel wins?- K390 vs. Rex45 vs.4v

    Based on what we've seen with the hardnesses on these 3 in the PM2, it should be REX45 and it wouldn't really be that close if we're talking edge retention. REX has come in between 65 and 67 pretty consistently, K390 has been a bit disappointing at 63 to 64 , and 4V has tested at 62.5 on a few...
  5. tomhosang

    4v or Cruwear for thin edge strength

    Some good info here. I agree with Larrin on the point that hardness and geometry will likely be the deciding factor between the two. In Spyderco's, Cruwear has been coming in anywhere from 61 to 63.5 or so. 4V has been 62.5 to 64.5. Assuming geometry is equal, the one with the higher hardness...
  6. tomhosang

    First time! Going to Ohio... Where and around to buy knives?

    No problem! The selection is normally a bit slim this time of year. The orders from Shot should start rolling in by the end of the month though!
  7. tomhosang

    First time! Going to Ohio... Where and around to buy knives?

    I work at a different location of Fin Feather Fur. Our prices have actually changed over the past year or so. Almost everything is at MAP now :)
  8. tomhosang

    Chasing a burr on REX 121

    I think you missed the point. The diamond 100% abrades the matrix AND the carbides. It shapes the carbides. It does not tear them out. That only happens when you use abrasives that aren't hard enough (AlOx, SiC, etc.).
  9. tomhosang

    Chasing a burr on REX 121

    I don't think that it's that the carbides themselves are brittle. You just need a matrix that is strong enough to retain them. These high hardness/high wear resistance steels (REX 121, 15V, Maxamet, etc) have high attainable hardness that helps retain those carbides in the matrix(high hardness =...
  10. tomhosang

    Chasing a burr on REX 121

    That's exactly my experience with Maxamet. It forms a very small but brittle burr. You can actually push it around with your finger and it'll break off. I think that might just be a characteristic of these higher hardness steels.
  11. tomhosang

    3v HRC Debacle

    That's absolutely fair. Great points. Kinda like what Spyderco does with their CQI stuff. Just because they've made revisions to a model doesn't mean you can get a free upgrade since you bought the pre-CQI.
  12. tomhosang

    3v HRC Debacle

    The only bad part about all of this is everyone who bought one at the lower hardness. But if Benchmade is giving free replacement blades to everyone who asks, then that issue is solved. I just wish they would've made a bigger announcement about it rather than just an Instagram comment.
  13. tomhosang

    Fura, Eafengrow, etc. - False Advertising?

    His name is Kurt. If you watch my videos or any of the guys I mentioned above, we talk about him quite a bit. Kurt is a phenomenal guy who is doing all of this for free just so the knife community has data points on what they're buying. He also is now doing videos of him testing the knives when...
  14. tomhosang

    Fura, Eafengrow, etc. - False Advertising?

    This data set comes from a good friend who does Rockwell testing and PMI testing as part of his job every day. He also now has a Rockwell tester at home thanks to some donations. Both machines have been professionally calibrated and certified. I'd respectfully disagree with @Insipid Moniker...
  15. tomhosang

    How To KME question

    The angle cube is a great tool for sure. When I had my KME, I tried doing the same thing you are with just matching the angles. The problem is that the angle varies a lot depending what part of the blade you have the stone resting against. So even though you matched it on one portion of the...
  16. tomhosang

    How To KME question

    The thickness compensator is your friend here. It's much more reliable than the angle cube when using stones of varying thicknesses.
  17. tomhosang

    Folder design with best lateral/prying strength

    I can't believe nobody has mentioned it yet, but the big blade stops on an XM-18 should help it resist lateral force.
  18. tomhosang

    Best Steel (and Angle) for Cardboard Cutting

    Couldn't have said that much better myself :)
  19. tomhosang

    Best Steel (and Angle) for Cardboard Cutting

    Okay, so I read through that entire article (love that site btw). I did not see anything that either supports or refutes either argument about stropping. The way I think of it is this: After a fresh sharpening, the edge is at its maximum potential. The cutting edge is going to last the longest...
  20. tomhosang

    Best Steel (and Angle) for Cardboard Cutting

    I'd pay close attention to what @DeadboxHero said. There's no way that any steel (even 8Cr), should be dull after just one box. The steels you mentioned (M390, S90V, S110V, etc.) should be enough to get you through weeks of use without needing much of a touch up. It almost sounds like there's...
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