BLUNTRUTH4U tests

nozh2002

nozh2002

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I just lear about this YouTube Channel BLUNTRUTH4U

It is another edge retention testing which I only welcome.
I was especially like to find that he has same disapponting results for SGPS I had.

Please, have a look:

http://www.youtube.com/user/BLUNTRUTH4U

For me it is very important to match my results with other independent results. I think he is present here as James007 - but not sure. Hope he has some table with all results listed there.

Thanks, Vassili.
 
SGPS, 3G, and SG2 are apparently all the same thing, just in different confiturations and with different manufacturers.
SGPS is solid, 3G is laminated in 420, and SG2 is what Kershaw called it in the SG2 Blur (which was laminated).

The steel is very similar in composition to S30V, but generally run harder.
 
Thanks Joshua, that clears a little of the fuzz. All these new steels coming out lately have got me spinning. :p
 
Joshua J. said:
SGPS, 3G, and SG2 are apparently all the same thing, just in different confiturations and with different manufacturers.
SGPS is solid, 3G is laminated in 420, and SG2 is what Kershaw called it in the SG2 Blur (which was laminated).

The steel is very similar in composition to S30V, but generally run harder.
Click to expand...

In the video blunttruth4u compares S30V with SGPS and claims that S30V is way better. It looks like the truth too when he shows the cutting test results.
 
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mongomondo said:
His review on the CS Ti lite is amusing, especially part 2.
Click to expand...

He states in annotation right in the beginning of that vid that he doesn't like it any more - that he knows now that the techniques that he demonstrates are ridiculous and dangerous. He comments further on that in his review of the KA-Bar TDI Ankle Knife.

;)
 
His testing approach is the one I like the most, simple and consistent. Great videos and great knife reviews.

A couple issues though. He does cut cardboard more quickly and with more force using the U2 SGPS than he did with the Paramilitary S30V at the end. He was sweating later on during the U2 test and the wetness affects how easily the knife shaves, as hair raises up and you are no longer shaving with the edge perpendicular to the hair. It's also not clear that the U2 had the same edge bevel as the Paramilitary, he doesn't say. Not trying to discredit his findings, I agree with it, just not to the degree that SGPS barely outcuts AUS8. As a longtime SGPS user, something doesn't seem right.

Like in the review, I find that SGPS sharpens a bit too quickly to be 62 rc. It's easier to sharpen than my S30V at 59 rc, and SGPS has a very similar composition to S30V, so I somehow doubt the steel is really that hard. I have 52100 and VG-10 at a confirmed 62 rc and they take way, way longer to sharpen, which is an excellent predicter of wear resistance.
 
I have 52100 and VG-10 at a confirmed 62 rc and they take way, way longer to sharpen, which is an excellent predicter of wear resistance.
Click to expand...

Yes it is but wear resistance is different than hardness. Its very hard to tell the hardness of a steel by the way it sharpenes. For example my spidies in S90V feel like a steel in the mid to low 60's but its only 58-59.
 
knifenut1013 said:
Yes it is but wear resistance is different than hardness. Its very hard to tell the hardness of a steel by the way it sharpenes. For example my spidies in S90V feel like a steel in the mid to low 60's but its only 58-59.
Click to expand...

To clarify, I got the hardness of 62 for my VG-10 and 52100 blades from rockwell testing. I assume since SGPS has a lot of hard carbides, such a steel at 62 rc would be much harder to sharpen than it is. Of course, only rockwell testing would confirm.
 
cotdt said:
To clarify, I got the hardness of 62 for my VG-10 and 52100 blades from rockwell testing. I assume since SGPS has a lot of hard carbides, such a steel at 62 rc would be much harder to sharpen than it is. Of course, only rockwell testing would confirm.
Click to expand...


I don't doubt the Rc of the ones you have had tested I'm just saying its nearly impossible to tell the Rc of a knife through sharpening.
 
I think the great thing about that guy is that he is not aligned with any one maker, and although he likes some of the knives more than others, he isn't a fan boy.

He seems to tell it like it is while giving some good information. I happened to catch his review on the Ontario Rat RC7 in D2 the other day. NO politics! No us vs. them and they suck stuff. He just reviewed the knife.

He took the knife and chopped through a well seasoned treated yellow pine 4X4. As a construction guy, that was impressived enough as I work with that kind of wood all the time. But more importantly, he was aware of chipping concerns with D2. With that in mind, he put his camera on macro mode and gave about a 10X view of the blade edge before resharpening.

I thought it was a great review since he did know about D2 concerns.

He doesn't do anything silly like cut concrete blocks or bend them in a vise, but especially in that particular video testing the D2, I couldn't think of a more pertinent test. After all, that 4X4 could have easily been a 4" hardwood branch out in the camp area you needed to cut.

Robert
 
just watched his blade steel opinions and U2 head to head. The steel video was full of factual errors, such as there being a difference between S30V & CPMS30V (exactly the same since Crucible was the only foundry to ever produce it) or stainless having less carbon than carbon steel, even though S30V has more carbon than the 1095 he talked about.

The U2 video seemed right in line with my casual observation of my own. The edge retention just is not there, but it does sharpen up ridiculously easily. The knife could switch to a core of AUS8 & I don't think anyone would notice.
 
I like his reviews as well... He's got me wanting to get an Izula very soon.
 
Bluntruth does good reviews, bought an Izula off the back of one of them, and didnt get a U2 for the same reason, didn't like the Edge.....over rated member of the band in my opinion
 
The edge retention of SGPS might be sensitive to blade geometry. A Krein-reground U2 with a 15 degree Sharpmaker microbevel performed very well in Cliff Stamp's edge retention testing (also on cardboard), even compared against ZDP189. Bluntruth4u on the other hand tested a U2 with stock geometry and factory sharpening and it didn't fare well against s30v.
 
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