Rockwell Hardness Tester

TaylorHardness said:
It probably is, and I understand them. Reddit at times is pretty unintelligent. A quick look through my website, database, or posts would put that thought to rest. All of my testing is done properly, my machine(s) are calibrated, verification blocks are being used. I know what I’m doing, and have been doing it for most of my adult life. I work in an accredited independent metallurgical test lab, and perform more Rockwell testing than I can count. Literally tens of thousands of samples every year. I perform audits for the likes of BHT, Boeing, Sikorsky, Bombardier, Grumman, etc. I’ve had numerous attempts at discrediting my work, and I’m honestly tired of coming home after working on aerospace parts for major companies, just to be discredited by guys using Google AI and 3 minutes of “research”. It gets tiring, and it’s extremely annoying at times. Sorry if I sound PO’d, at this point I don’t know how to respond to this type of thing.
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So glad to see you out here spreading facts! The knife industry has needed independent 3rd party testing, badly!
Now we need 3rd party toughness testing
 
~Tu~ said:
Easy, it was inly an example of unknown blade history
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Are you under the impression that one can affect the Rc hardness to any significant degree of the blade tang/pivot area by sharpening the edge?
 
J. Doyle said:
Nice dodge to the question. You are presenting a scenario so far removed from any and all probability that its essentially worthless for the point of the discussion.
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Traceability is very important.

Another example - i hate knife brand "x", so i temper the blade in my oven. Then i send it in to Taylor for testing
 
~Tu~ said:
Traceability is very important.

Another example - i hate knife brand "x", so i temper the blade in my oven. Then i send it in to Taylor for testing
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You're really reaching here to make some (unclear) point, but okay. Sure, possible.

Still pretty unlikely and to anybody with any discernment there would probably still be tells.

Someone would have to be REALLY good and even more bored to pull that off undetected.
 
ferider said:
We need chain of custody documentation for the blades !

J/K :)

I do appreciate what you guys are doing, T TaylorHardness and S Skylark427 as people have been looking for this kind of data for a long time and knife manufacturers are not neutral and have not been forthcoming.
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Mom said it was my turn with the Strider blade! Lol. You’re welcome brother. The testing will continue like normal. And once I figure out how this website works, and have new results to post, I’ll begin posting on here as well.
 
J. Doyle said:
You're really reaching here to make some (unclear) point, but okay. Sure, possible.

Still pretty unlikely and to anybody with any discernment there would probably still be tells.

Someone would have to be REALLY good and even more bored to pull that off undetected.
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Yeah... depending on what they would do to the blade to over temper it, the steel would change color if it was enough to drastically affect the results. Someone would really need to hate a specific brand or maker and be really bored, and even then if somehow pulled off unnoticed the next few blades tested in the same steel would show the normal range.
 
TaylorHardness said:
That would be kinda silly, but also not impossible lol
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Skylark427 said:
Yeah... depending on what they would do to the blade to over temper it, the steel would change color if it was enough to drastically affect the results. Someone would really need to hate a specific brand or maker and be really bored, and even then if somehow pulled off unnoticed the next few blades tested in the same steel would show the normal range.
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Very easy with a data sheet
 
~Tu~ said:
Very easy with a data sheet
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Right, but what I mean is though it'd still likely change the color of the steel, assuming they tempered it enough to drop the hardness noticeably (3Rc~). If it's a factory knife, restoring the regular finish again, that'd take time and still probably not look identical. I mean I guess they could acid wash it. But again, once more samples came in the same steel from the same manufacturer/maker, we'd see the difference and know something was up.

Not impossible, but also a decent amount of work to be undetected. But another reason I want more samples of each steel from a given manufacturer before definitively saying there's a range for it.
 
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