Rust spots? S35VN Umnum

Tenakal

Tenakal

Joined
Sep 4, 2015
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hey guys, I noticed a couple weird spots/dots on my umnumzaan today and was wondering if anyone had seen this before? They’re tiny but dont wipe off and I don’t remember them being there last time I carried it
 

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Those could be pepper spots. Have you tried removing them with something mild, like toothpaste or one of the lighter Flitz options? (I don't own an Umnumzaan so I can't vouch for what that might do to the blade finish, but toothpaste has never hurt any of my knives.)
 
Dadpool said:
Those could be pepper spots. Have you tried removing them with something mild, like toothpaste or one of the lighter Flitz options? (I don't own an Umnumzaan so I can't vouch for what that might do to the blade finish, but toothpaste has never hurt any of my knives.)
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I haven’t done anything like that yet, just alcohol wipes. What are pepper spots exactly? And what causes them? Not familiar with the term. Thanks for the reply!
 
Tenakal said:
I haven’t done anything like that yet, just alcohol wipes. What are pepper spots exactly? And what causes them? Not familiar with the term. Thanks for the reply!
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They're teeny tiny rust spots. It's a term I picked up hanging out on the Porch (the traditional subforum here).

Unless they turn into full-blown brown/red rust, my understanding is that they're not the end of the world. But, assuming your blade has been kept clean and dry, away from salt water, and wiped down after being wet, it would be surprising to see them on S35VN. S35VN isn't rustproof, but it's quite corrosion resistant.
 
It's rust (and so are 'pepper spots'). Looks like the rust that shows up on all the S35Vn blades I own. Most of my knives don't get rust where I'm at, but VG10 and S35Vn are exceptions.

You could try a pencil eraser, Cape Cod Cloth, Nevr Dull, 0000 wool, or anything like that really to try to get rid of them without affecting the finish.
 
Alright guys, it seems like the pencil eraser trick worked. I took some alcohol prep pads, cleaned off the blade and took the eraser to it for a couple strokes. Looks brand new again. Definitely going to keep it oiled! Didn't expect S35VN to rust this fast, especially since I keep my knives oiled and dry.
 
Tenakal said:
Alright guys, it seems like the pencil eraser trick worked. I took some alcohol prep pads, cleaned off the blade and took the eraser to it for a couple strokes. Looks brand new again. Definitely going to keep it oiled! Didn't expect S35VN to rust this fast, especially since I keep my knives oiled and dry.
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I have a VG10 blade that I used to scrape some extra stubborn adhesive off some countertops in combination with some 409 cleaner...I would have normally used a putty knife but I'd left it with a co-worker at another jobsite so I conscripted my Spyderco for the job.

To my surprise, upon opening my blade the next day there were dozens of little rust spots on both faces. I used some chrome polish and they were erased without issue. I guess it was the bleach component in the cleaner I used :confused:...but still I was surprised that VG10-- the "Japanese Gardener's steel"-- was affected in such a way.

Did you use your blade around some sort of household cleaner/chemical, perhaps?
 
Stainless doesn't mean Stainnever. That's one of the reasons Chris Reeve designed the Sebenza to be disassembly-friendly by the customer. It's also why he sells the grease (not oil), since it provides both lubrication and protection.
 
PeteyTwoPointOne said:
I have a VG10 blade that I used to scrape some extra stubborn adhesive off some countertops in combination with some 409 cleaner...I would have normally used a putty knife but I'd left it with a co-worker at another jobsite so I conscripted my Spyderco for the job.

To my surprise, upon opening my blade the next day there were dozens of little rust spots on both faces. I used some chrome polish and they were erased without issue. I guess it was the bleach component in the cleaner I used :confused:...but still I was surprised that VG10-- the "Japanese Gardener's steel"-- was affected in such a way.

Did you use your blade around some sort of household cleaner/chemical, perhaps?
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You know, come to think of it. We have these things called “Sani-hand wipes” on the ambulance, and I wonder if thats causing the chemical reaction to occur.
 
PeteyTwoPointOne said:
I have a VG10 blade that I used to scrape some extra stubborn adhesive off some countertops in combination with some 409 cleaner...I would have normally used a putty knife but I'd left it with a co-worker at another jobsite so I conscripted my Spyderco for the job.

To my surprise, upon opening my blade the next day there were dozens of little rust spots on both faces. I used some chrome polish and they were erased without issue. I guess it was the bleach component in the cleaner I used :confused:...but still I was surprised that VG10-- the "Japanese Gardener's steel"-- was affected in such a way.

Did you use your blade around some sort of household cleaner/chemical, perhaps?
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What actually likely happened to your knife is the adhesive trapped any moisture under it against the blade. Normally it would just evaporate off.

I have seen this happen before with things like Renaissance Wax where just tiny drops of spit from talking get trapped under the wax and cause rust.
 
Lapedog said:
What actually likely happened to your knife is the adhesive trapped any moisture under it against the blade. Normally it would just evaporate off.

I have seen this happen before with things like Renaissance Wax where just tiny drops of spit from talking get trapped under the wax and cause rust.
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As if I'm not obsessive enough about my safe queens...now I'll have to wear a respirator to wax my blades...THANKS! :rolleyes:;):p
 
Stone washed steel is more prone to these spots than the same steel with a satin, or polished finish. Gives more surface area, and more micro nooks and crannies for moisture, etc to get a toe hold.
 
Tenakal said:
Didn't expect S35VN to rust this fast,
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A2 will do that but more so.
It's a good sign; when I see that I know there must be some iron in this funny steel some where.
(don't take offense; to me ALL STEEL is funny steel if it isn't M4)
 
I opened a can of drain cleaner . The seal on bottle was stubborn and i used my small sebenza to cut it .
I noticed a dark spot on the tip . Not rust but a stain that was very hard to remove! Drain cleaner is a strong acid i believe. Many foods contain acids.


Jake
 
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