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TOPIC: Oil on stock diamond stones... your thoughts?

Oil on stock diamond stones... your thoughts? 2 years 3 months ago #3507

  • razoredgeknives
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so I just noticed that a few sets of my stock diamond stones (400/600, 800/1000) had rust spots on them! didn't think I put them away wet since I always lay them out on a towel to air dry. anyway, i was just wondering what you guys think about putting a very little amount of oil on each stone and rubbing it in? I'm not talking about an abundance of oil like on normal stones... just enough to keep it from rusting. and just to let you know, I already did this to the listed stones (with weapon shield clp oil) ... they look fine but ill try to report back. I. normally just jump right into stuff and it costs me later but oh well lol.
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Re: Oil on stock diamond stones... your thoughts? 2 years 3 months ago #3508

  • BassLakeDan
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razoredgeknives wrote:
so I just noticed ... .rust spots ...didn't .. put them away wet .. oil.. just enough to keep it from rusting. .

Oh boy, nothing better than a little chemistry! here we go: rust is iron Oxide, the result of a reduction reaction which involves oxygen. So you have two choice here to prevent that reaction. first (and the best) is to take away the source of the oxygen which may sneak up around you without you realizing it. Look to eliminate powerful oxidizers that may be around your storage or work environment. Things that contain or outgas chlorine are always suspect, common household cleaning agents are always suspect here. Common garden fertilizers contain nitrates, do you sharpen or store the plates in an out building or near a storage shed that contains such items i.e. ammonium or potassium nitrates? Also look for any compounds that contain perchlorates, sometimes used in fabric color fast bleach formulas like Oxy-Clean. Water can release oxygen thru hydrolysis but if you dry the plates this is unlikely to be the cause. Do store the plates in a room with less than 40% RH humidity, anything over that is suspect.

After you track down any sources of oxygen or chemicals that are either powerful or mild oxidizers in your work or storage area then: Your second best approach is to use oxygen barrier coatings. The oil you mention is this type of strategy, but there is better chemistry available to you. VCI or Vapor corrosion inhibitors are an inexpensive way to win the battle. There is a whole slew of products in this arena. Just google for VCI paper and you will get many vendors. Here is a link to try
Last Edit: 2 years 3 months ago by BassLakeDan.
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Re: Oil on stock diamond stones... your thoughts? 2 years 3 months ago #3509

  • mark76
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BassLakeDan wrote:
Oh boy, nothing better than a little chemistry! here we go: rust is iron Oxide

So what is the iron in here? Is it from the knives you sharpened? That shouldn't be too bad. Is there any other source of iron in the stones?

Thanks for the link to the VCI paper. Interesting stuff. I'd never heard of it.
Last Edit: 2 years 3 months ago by mark76.
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Re: Oil on stock diamond stones... your thoughts? 2 years 3 months ago #3510

  • StevenPinson
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I would just clean them with a little 91% ISO Alcohol and throw them in a box with a desiccant pack.
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Re: Oil on stock diamond stones... your thoughts? 2 years 3 months ago #3513

  • razoredgeknives
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those are all good points... but i am storing them where i always have... but now all of a sudden they have some rust spots on them. i am wondering if i put them away damp... thanks for the VCI paper link Dan. I know I could get some silica gel packets and throw them in there... but that would be a pain. I will see how this drop of oil works out I guess... since I have it on hand already! hehe just checked them today... they look good. i just wonder if the oil will have any long term effect if i am cleaning them with hot water and soap each time before the drop of oil.

dan, what do you do w/ the VCI paper... just wrap your stones in them for a time or two for the molecular change to adhere to the surface of the metal?
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Re: Oil on stock diamond stones... your thoughts? 2 years 3 months ago #3514

  • BassLakeDan
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mark76 wrote:
..
So what is the iron in here? ...

yes the steel is from the debris of sharpening but also,the base material of the diamond plates is steel, all of which is an alloy of iron ;) .
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