CRK heat treat question

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Bijluvsblades

Joined
Dec 24, 2021
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Hi all - I’m sure this has been covered elsewhere and if so please point me to the correct thread.

But if not…

I came across a YouTube vid of a chap who drills holes into CRK blades for a different style of knife opening. His perspective was that because the CRK blades are so easy to drill they are poorly (if at all) heat treated and the Rockwell ratings are phony. This goes for 35 or 45 steels.

Has anyone recently Rockwell tested their blades? Is this rationale at all valid?

Thanks
 
I am not sure of the specifics regarding that allegation.

A hardened steel should definitely be harder to drill than unhardened. How much of a difference depends on what the drill bit is made from and what the steel is. High quality carbide drill bits will have significant less differences than a HSS drill bit. I would say it could point to issues, but is not a definite sign depending on the bit being used. Rockwell testing would be much more scientific way of testing.
 
I agree on the issue of the bit being used. I have assumed the YouTuber used the same type for all the blades.

Here’s the vid.


In the comments he is challenged about not actually Rockwell testing. His response was in large unsatisfactory but he did note that none of the 300 blades he’s drilled have shown a Rockwell dimple either. Now that could be the blanks were tested snd then then grind and so the dimple was removed etc.

Has anyone Rockwell tested their 35 or 45 blades?
 
If I good remember blade hardening DO NOT contain whole blade !!!
Cutting edge only.
So drilling somewhere else is a BIG BS


BTW - who that expert is ?
Trollist Extraordinaire :^D

We got here several genuine knifemakers, just waiting for their resonse ...
 
Whelp, guess I'm in the market for a new knife.......
9gnWrvG.jpg
 
I was surprised at the content in the vid. I’ve bought bought two CRKs with one being 35 and the other 45 and was doing layman research into their differences when I came across the vid. It in now way reflects my views because I don’t have any!

But I am curious if anyone has Rockwell tested their blades or if even doing so would give meaningful insight.
 
Bijluvsblades said:
I was surprised at the content in the vid. I’ve bought bought two CRKs with one being 35 and the other 45 and was doing layman research into their differences when I came across the vid. It in now way reflects my views because I don’t have any!

But I am curious if anyone has Rockwell tested their blades or if even doing so would give meaningful insight.
Click to expand...

If you test a flat smooth spot, then it tells you about what the Hardness, Rockwell C is on that spot. Then you infer that the rest of the blade is the same HRc.
 
If he is making this level of claims he needs to pony up and get the hrc professionally tested.

Maybe there has been a slip in QC at CRK. I say that to give the guy the benefit of the doubt but after looking over his channel, about statement and watching a couple of his videos I think he's a nut job. He looks and acts unhinged, making shocking videos to get views. Very much in line with the idiot abusing ZT knives to get them to fail later on queue.
 
Mecha said:
If you test a flat smooth spot, then it tells you about what the Hardness, Rockwell C is on that spot. Then you infer that the rest of the blade is the same HRc.
Click to expand...
Thanks for that. I understand what the hardness testing is, but I was more thinking of a) that Tuber’s accusation of the ratings being false and b) let’s say the rating is off, does that give credence to his broader assertions about the blades being poor vs ‘properly’ heat treated.

Regarding his methods and anecdotes of drilling, I find that silly given the gravity of his accusations. I’m wondering if anyone has better data from an accepted process and what that data and conclusion is.

Prior to buying I read many accounts of 35 steel being comparatively soft but purposefully so for ease of field sharpening and to reduce warranty events from breakage. I can live with this as I use a Dozier D2 fixed blade for real camping needs and something bespoke for hunting/field dressing.
 
Many youtubers make there living by creating controversial content to get clicks. I am very skeptical buck would be harder to drill than Spyderco having resharpened a fair number of bucks and Spydercos... It could also be he is telling the truth and the blade shape of some of those is playing with him a little bit. Some bits will not start as quickly on an angled surface like a thin buck style blade vs a larger blade with a flat section. Or he just wants clicks...;)

It seems like I remember awhile ago there was someone here who was RC testing blades for people who sent him there knife, But I don't rember his name...
 
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