Digging sprinkle out with Yuna Hard II ZDP-189 (video)

nozh2002 said:
It is clearly has not chips you may expect from brittle steel. Sorry, but this is obvious. Of course under microscope it should be some chips, but this can not justify saying that this steel is brittle.

Thanks, Vassili.
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A chip is a chip no matter how small. If you take another steel and do the same thing and it does not chip but roll or flatten how does that then compare to ZDP?
 
knifenut1013 said:
A chip is a chip no matter how small. If you take another steel and do the same thing and it does not chip but roll or flatten how does that then compare to ZDP?
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Well, it does matter how small damage is. Imagine -1/8" chip or evem 1/16" wersus let say 5 micron chip. Do you see any difference in this chip sizes? I do see. In first case I will consider steel brittle in second case not - pretty simple.

I do not see any reason to do comparison testing here, because we are talking about baseless claim that ZDP-189 is brittle.

This is pretty heavy load which should expose brittleness in practical aspects. If we want to say that ZDP189 is less brittle then steel X, then we should do comparison. Otherwise it is OK.

So there is base here to say that ZDP189 is not brittle. But it would be wrong to say that ZDP189 most non brittle steel, because we did not compare it to othe and it was one runner race.

You are welcome to do your own testing if you want to prove something. It will be nice to have someone else join testing effort, because it is hard job.

Thanks, Vassili.
 
nozh2002 said:
http://www.youtube.com/watch?v=O0PHxVP6WSo

I was replacing sprinkler and use Yuna Hard II with ZDP-189 blade (actually clay ATS-34+ZDP-189+ATS-34). I was doing this for different reasons - at first there are many roots in this ground and so with shovel I had to use some force, which I rather avoid, because I afraid to cut sprinklers pipes. So it need to be delicate digging and root cutting - knife is only solution I know.


Thanks, Vassili
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IDK, since that folder is pricy I would have avoided using it for such a common task. There are a lot of tools out there to use, maybe it would take more elbow grease, but maybe not. It is nice that you can aford to use such a nice knife and show us. Thanks for the video.

I would have tried:
1) a garden trowel, cultivator, or weeder (2-10 bucks each)
2) hand pruners (5-10 bucks)
3) a small shovel or pick (10-20 bucks)
4) a small sickle (with a short flat blade, not a long curved one. 5-10 bucks). Hiyokko is one brand that makes em (of many).

I would bet on the sickle or pruners if the roots were really nasty and you still needed a delicate touch
 
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blackfeetmageet said:
IDK, since that folder is pricy I would have avoided using it for such a common task. There are a lot of tools out there to use, maybe it would take more elbow grease, but maybe not. It is nice that you can aford to use such a nice knife and show us. Thanks for the video.

I would have tried:
1) a garden trowel, cultivator, or weeder (2-10 bucks each)
2) hand pruners (5-10 bucks)
3) a small shovel or pick (10-20 bucks)
4) a small sickle (with a short flat blade, not a long curved one. 5-10 bucks). Hiyokko is one brand that makes em (of many).

I would bet on the sickle or pruners if the roots were really nasty and you still needed a delicate touch
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Well, I do not really need this for most of the time. I have pruners - they will not work because you do not see really roots under the ground, knife is much better it just cut whatever is on it's way. I have small showel but it require significant force to cut through roots because edge is not sharpened, also direction of force applied is vertical, so I may cut sprinklers pipe this way. With knife I apply less force in side direction, chances to cut pipe is way smaller. Sickle is probably better but I do not have it - did not even think about it, thanks for you advice, I need to find one.

So knife is best tool for this job at that tme. Also I am confident that this knife can stand this task just fine - and it did. As well I restore it to normal conditions without any trouble.

Thanks Vassili,
 
Sickle's are actualy hard to find in the shape I refered to. Usualy, they are imports, but they are around. Ebay would probably have them at inexpensive prices.

I have been curious about zdp189 lately. I was thinking about getting a spyderco endura. Seems like a nice steel that can handle getting a little dirty;)

thanks for the review.
 
There were some chips in the vid pause at 1:58. Not big, not to much of a problem.

To be honest, this wasn't the most demanding task. But since the knife is a folder, you probably wont be doing any more demanding tasks than this with it.

In my opinion, ZDP-189 would be good, for a smaller bladed knife to use as a backup. I would not use it as a survival knife b/c it is more prone to chipping than other steels, and it hard to sharpen w/o daimond stones.

But each to his own.
 
zhangmaster12 said:
There were some chips in the vid pause at 1:58. Not big, not to much of a problem.

To be honest, this wasn't the most demanding task. But since the knife is a folder, you probably wont be doing any more demanding tasks than this with it.

In my opinion, ZDP-189 would be good, for a smaller bladed knife to use as a backup. I would not use it as a survival knife b/c it is more prone to chipping than other steels, and it hard to sharpen w/o daimond stones.

But each to his own.
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To be hones I am really wondering how you guys stuck at 1:58 position and did not see same part of the blade claeaned up in 10 seconds (2:08).

This is really amaizing, this is video not photo. I clean up blade some dirt was stuck - I spit on it and clean and show that there is not any chips, but you like so desperate to see chips there that just continue to repeat that nonsense!

Why don't you better stack at 1:49 - there some dirt covered much bigger part of the blade and you may claime that ZDP189 just falling apart?

Thanks, Vassili.
 
I have to agree with nozh2002. It looks like chipping at 1:58, there's no doubt about that, but after he cleans the blade off a bit it's pretty obvious the edge is intact.
 
How many threads do we need to prove that ZDP-189 is the best steel for all uses according to Vassili's tests which are irrefutable and that everyone else is simply conspiring to undermine ZDP-189 including knifemakers who use CPM-M4 in cutting competitions because they do not have access to large blades of ZDP-189 or are too lazy to acquire them?
I'm just wondering.
If you knew ZDP-189 was the best steel you'd probably want everyone else to know too, so can you blame him?
Those who claim ZDP-189 chips easily or is brittle have never used it or are lying and Hitachi's chart is also misleading or false. Right?
 
AF said:
How many threads do we need to prove that ZDP-189 is the best steel for all uses according to Vassili's tests which are irrefutable and that everyone else is simply conspiring to undermine ZDP-189 including knifemakers who use CPM-M4 in cutting competitions because they do not have access to large blades of ZDP-189 or are too lazy to acquire them?
I'm just wondering.
If you knew ZDP-189 was the best steel you'd probably want everyone else to know too, so can you blame him?
Those who claim ZDP-189 chips easily or is brittle have never used it or are lying and Hitachi's chart is also misleading or false. Right?
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Well I wouldn't base my opinion on the steel on Nozh's 1 example...he might have got lucky, clearly he appears biased! plus those hitachi tables are only relevant when they support ones opinion.
 
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