S30V DLC Corrosion?

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cletusvandamme
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S30V DLC Corrosion?

#1

Post by cletusvandamme »

I recently purchased a blacked out yojimbo 2 on the secondary market that came like this.

Has anyone had any success with polishing something like this away?
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Re: S30V DLC Corrosion?

#2

Post by prndltech »

It doesn’t wipe right off with some oil? DLC coating is absorbent. Try a heavy coat of some oil/lubricant and see what happens. You’ll notice it soaks it up.
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cletusvandamme
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Re: S30V DLC Corrosion?

#3

Post by cletusvandamme »

Tried soap, solvents and oil while scrubbing with a toothbrush. It doesnt come off
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cletusvandamme
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Re: S30V DLC Corrosion?

#4

Post by cletusvandamme »

No. I have tried scrubbing it with soap, alcohol and oil and it still looks the same
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sal
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Re: S30V DLC Corrosion?

#5

Post by sal »

Hi Cletusvandamme,

Welcome to our forum.

Where are you?

sal
cletusvandamme
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Re: S30V DLC Corrosion?

#6

Post by cletusvandamme »

Hi. Thanks Sal
Im from sweden
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Fred Sanford
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Re: S30V DLC Corrosion?

#7

Post by Fred Sanford »

I bet it comes off with Flitz (metal polish). There are folks here who have Flitz'd coated blades with great luck. I have never done it.
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sal
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Re: S30V DLC Corrosion?

#8

Post by sal »

Hi Cletusvandamme,

I would try the Flitz metal polish and let me know if that works? Put it on and let it stand for about 15 minutes, then wipe it off.

sal
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Re: S30V DLC Corrosion?

#9

Post by JRinFL »

Vivi has a related post about a DLC coated blade that will be of interest to you. He had similar stains on his DLC M4 Manix XL.

https://forum.spyderco.com/viewtopic.php?f=2&t=87786
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Re: S30V DLC Corrosion?

#10

Post by vivi »

JRinFL wrote:
Thu Oct 15, 2020 1:37 pm
Vivi has a related post about a DLC coated blade that will be of interest to you. He had similar stains on his DLC M4 Manix XL.

https://forum.spyderco.com/viewtopic.php?f=2&t=87786
I might have to try Sal's cleaning suggestion on it. This weekend I plan to reprofile that knife and step up my cleaning attempts.
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Re: S30V DLC Corrosion?

#11

Post by Sharp Guy »

Fred Sanford wrote:
Thu Oct 15, 2020 12:26 pm
I bet it comes off with Flitz (metal polish). There are folks here who have Flitz'd coated blades with great luck. I have never done it.
sal wrote:
Thu Oct 15, 2020 12:49 pm
Hi Cletusvandamme,

I would try the Flitz metal polish and let me know if that works? Put it on and let it stand for about 15 minutes, then wipe it off.

sal
I've used Flitz on DLC quite a lot and it works great.
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Re: S30V DLC Corrosion?

#12

Post by jpm2 »

cletusvandamme wrote:
Thu Oct 15, 2020 8:48 am
I recently purchased a blacked out yojimbo 2 on the secondary market that came like this.

Has anyone had any success with polishing something like this away?
Is it sitting on top of the coating or is it depressions? How does it feel when you run a fingernail across it?
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curlyhairedboy
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Re: S30V DLC Corrosion?

#13

Post by curlyhairedboy »

cletusvandamme wrote:
Thu Oct 15, 2020 8:48 am
I recently purchased a blacked out yojimbo 2 on the secondary market that came like this.

Has anyone had any success with polishing something like this away?
i've seen this before on my DLC coated blades, in both s30v and 4v. It does come off with liquid Barkeeper's Friend cleaner.
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cletusvandamme
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Re: S30V DLC Corrosion?

#14

Post by cletusvandamme »

jpm2 wrote:
Thu Oct 15, 2020 7:08 pm
cletusvandamme wrote:
Thu Oct 15, 2020 8:48 am
I recently purchased a blacked out yojimbo 2 on the secondary market that came like this.

Has anyone had any success with polishing something like this away?
Is it sitting on top of the coating or is it depressions? How does it feel when you run a fingernail across it?
It can barely be felt. But here is another picture with different lightning and it looks like rust.
I will try the flitz polish once it gets here
IMG_20201016_192719_copy_2097x1502.jpg
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Re: S30V DLC Corrosion?

#15

Post by jpm2 »

cletusvandamme wrote:
Fri Oct 16, 2020 11:37 am
jpm2 wrote:
Thu Oct 15, 2020 7:08 pm
cletusvandamme wrote:
Thu Oct 15, 2020 8:48 am
I recently purchased a blacked out yojimbo 2 on the secondary market that came like this.

Has anyone had any success with polishing something like this away?
Is it sitting on top of the coating or is it depressions? How does it feel when you run a fingernail across it?
It can barely be felt. But here is another picture with different lightning and it looks like rust.
I will try the flitz polish once it gets here
IMG_20201016_192719_copy_2097x1502.jpg
Maybe it's just the light but it looks like a lot of pitting. There's also a lot of white specks on the blade, even in the spots that look like rust. Any idea what the white is?

I usually use fine steel wool to clean up minor corrosion.
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sal
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Re: S30V DLC Corrosion?

#16

Post by sal »

Hi Cletusvondamme,

I am following the thread. From an R&D perspective, we need to know.

sal
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Re: S30V DLC Corrosion?

#17

Post by Wartstein »

cletusvandamme wrote:
Fri Oct 16, 2020 11:37 am
jpm2 wrote:
Thu Oct 15, 2020 7:08 pm
cletusvandamme wrote:
Thu Oct 15, 2020 8:48 am
I recently purchased a blacked out yojimbo 2 on the secondary market that came like this.

Has anyone had any success with polishing something like this away?
Is it sitting on top of the coating or is it depressions? How does it feel when you run a fingernail across it?
It can barely be felt. But here is another picture with different lightning and it looks like rust.
I will try the flitz polish once it gets here
IMG_20201016_192719_copy_2097x1502.jpg
Welcome to the forum and greetings up to Sweden (I am in Austria) :)

/ I´m a bit confused: In this pic the blade does not look "blacked out" and coated - ?!
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cletusvandamme
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Re: S30V DLC Corrosion?

#18

Post by cletusvandamme »

sal wrote:
Fri Oct 16, 2020 9:46 pm
Hi Cletusvondamme,

I am following the thread. From an R&D perspective, we need to know.

sal
Applied the flitz and this is the result
IMG_20201027_024758_27038006111498.jpg
The spotting isnt as visible as before but the DLC has a slight sheen to it now. Guess i rubbed it too much
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Re: S30V DLC Corrosion?

#19

Post by tonijedi »

On my experience, with other brands coatings, when the rust develops there is permanent damage on the coating.
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Re: S30V DLC Corrosion?

#20

Post by JD Spydo »

Fred Sanford wrote:
Thu Oct 15, 2020 12:26 pm
I bet it comes off with Flitz (metal polish). There are folks here who have Flitz'd coated blades with great luck. I have never done it.
I like your advice>> I would use the FLITZ first off and then I would also use BALLISTOL to give it a good bath with. I've had so many good results with BaLLISTOL over the years.

And if it's really stubborn you might take a soft bristle toothbrush will some "Bar Keeper's Friend" cleanser that you can get at your local grocery or hardware store. Out of those three products you should be able to remedy the problem.
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