💥Blast from the Past💥 (unofficial nostalgic older knife thread)

RPZIP said:
Al Mar SERE 3". If I still have it - and I don't think I threw it out - my oldest user knife. Carried and used it a lot. Great knife. The locking spring went limp or broke. Photo pulled off the web......

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Great knives, got one stashed in the lockback drawer🥰
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Crappie71 said:
Here’s one I saved from a junk pile in an antique shop. I’ve had it for several years, but I haven’t been able to find any information on it.
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Hey Crappie71, if it's of any interest to you, I found another R.L. Stapleton dagger. The one below is stamped 1944, and the description accompanying the knife says that it was made in 1944. It's also stamped with the name R.F. McIntosh. But that's all I could find.


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killgar said:
Hey Crappie71, if it's of any interest to you, I found another R.L. Stapleton dagger. The one below is stamped 1944, and the description accompanying the knife says that it was made in 1944. It's also stamped with the named R.F. McIntosh. But that's all I could find.


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Wow! I thought maybe early 40s (WWII era). Mine has a sheath like that, only it is basket weave stamped. Mr. Stapleton must have made his war contribution by producing knives. 👍
 
SharpBits said:
I think 5021 is the model number.
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It came up as a blade steel when I looked it up. The position of the mark is consistent with where CRKT would put blade steel markings as well.
I make fun of Grok all the time for getting things wrong, so we can take this with a grain of salt, but I made it double check this and that normally cuts down on the BS a little bit. I would still trust the guys on this forum more than AI on the topic. I was a little surprised by the high praise as well.

5021 steel (also called 14-4CrMo or S35VN-Mod) is a martensitic stainless steel developed by Carpenter Technology specifically for high-performance knife blades. It was designed as a cost-effective alternative to premium powder metallurgy (PM) steels while offering very similar performance.Most direct comparisons:
  • Very close to Crucible CPM-S35VN
    • Same hardness range (58–61 HRC)
    • Nearly identical edge retention and toughness
    • Slightly easier to sharpen than S35VN
    • Corrosion resistance is essentially the same
  • Slightly better than Crucible CPM-S30V
    • Better toughness and impact resistance
    • Similar edge retention
    • Easier to grind and finish
  • Comparable to Bohler-Uddeholm M390/20CV/CTS-204P in real-world use
    • Edge retention is within ~5–10% of M390 in most cutting tests
    • Much tougher (less prone to chipping)
    • Significantly easier to sharpen
  • Better toughness than Elmax, LC200N, and Vanadis 4 Extra
 
marcus aurelius said:
It came up as a blade steel when I looked it up. The position of the mark is consistent with where CRKT would put blade steel markings as well.
I make fun of Grok all the time for getting things wrong, so we can take this with a grain of salt, but I made it double check this and that normally cuts down on the BS a little bit. I would still trust the guys on this forum more than AI on the topic. I was a little surprised by the high praise as well.

5021 steel (also called 14-4CrMo or S35VN-Mod) is a martensitic stainless steel developed by Carpenter Technology specifically for high-performance knife blades. It was designed as a cost-effective alternative to premium powder metallurgy (PM) steels while offering very similar performance.Most direct comparisons:
  • Very close to Crucible CPM-S35VN
    • Same hardness range (58–61 HRC)
    • Nearly identical edge retention and toughness
    • Slightly easier to sharpen than S35VN
    • Corrosion resistance is essentially the same
  • Slightly better than Crucible CPM-S30V
    • Better toughness and impact resistance
    • Similar edge retention
    • Easier to grind and finish
  • Comparable to Bohler-Uddeholm M390/20CV/CTS-204P in real-world use
    • Edge retention is within ~5–10% of M390 in most cutting tests
    • Much tougher (less prone to chipping)
    • Significantly easier to sharpen
  • Better toughness than Elmax, LC200N, and Vanadis 4 Extra
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From the CRKT 2009 catalog.

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