Please help after laughing at me 🥹 (after putting knife in Lemon+Cola)

D

Dextar

Joined
Sep 14, 2017
Messages
616
--------------Update--------------
Thanks for all of your advices, special thanks to Mk-211, FortyTwoBlades, Bill DeShivs.
Now the rusts are removed, only problems:
1. there are many "scratches" after wiping down, at the time the new knife arrived, I concerned about 2 scratches, now I don't have any concern🤣, but is there a way to polish it?
2. after applying WD-40, the it feels "greasy" every time I touch and handle it, is it safe if I touch food after handling the knife? Is there a way to remove the oil-feeling?

Here are the "new" knife, thank you all once again.
1737.jpg

889.jpg

888.jpg


--------------OP--------------
It's the "mushroom" again, some of you may still remember it.
Let's have a look at the current status, and I will tell the full story.
If there is a way to rescue it, make it back to origin, please advise......

Now:
0011.jpg


Background:
At the beginning the mushroom arrived, there are the surface generally was not too bad, only some "scratches".
Then, I have taken it with me in 5-10 hiking activities, but at the 2-3 time hiking, it was raining, I put the knife in the sheath (originally provided by the dealer) and placed it in my hip-belt pocket. After getting back home, I found there are something like "rust" on the surface of the blade, like following image shows:
0002.jpg


at the beginning, I thought it was because of the material of the sheath, but then I take the other 2 knives placed in same sheath (also took with me in hiking in the rain) to compare, those 2 knives have no issue. like following image shows:
0001.jpg


Then I checked the other parts and detail of the mushroom knife, same issues:
0004.jpg


but the inside of the liner is shinning:
0007.jpg


Then, I wanted to try to clean it by using: Lemon+Cola+Salt,
after 10mins, I picked the knife up from the "mixed liquor" shall I call it?
That's the result.
0010.jpg


Then that's the result
0011.jpg



If you laughed at this piece of joke, would you please give some analysis and a way can rescue?

I am wondering:
1. Why the rest 2 knives haven't had same problem (rust after raining), maybe they used different material? or they have some coating?
I just checked that the Laguiole one, they declare use 14C28N Stainless steel blade,
www.fontenille-pataud.com

Laguiole Knife Nature Classic Range Hybrid Ironwood

The Laguiole Nature knife Hybrid Ironwood is simply the best Laguiole knife of the market! We have set a precision mechanism with a secure locking blade. Laguiole handmade in France.
www.fontenille-pataud.com www.fontenille-pataud.com
but they mushroom one uses: XC75 carbon steel
www.fontenille-pataud.com

Mushroom knife Arizona ironwood

The perfect knife for mushrooms picking, buy online now your mushroom knife Arizona ironwood handmade in France by Fontenille Pataud.
www.fontenille-pataud.com www.fontenille-pataud.com
if this is the reason, my fault, my cost of lacking knowledge, AND, I didn't expect this material is applied to a mushroom knife costs around EUR200.

2. is there a way can fix it or recover it as the first look?
0013.jpg


Thank you for watching😂, and I look forward to the advices
 
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You've discovered the marketable difference between stainless steel and carbon steel. Congratulations.

It is possible to restore some shine to the blemished blade, but hardly worth the effort, and it is likely to darken again and again especially now that you also accidentally discovered "forced patina".

Remove the rust from the internal parts and keep it clean, oiled, and sharp and it will continue to serve you well.
 
edgelion said:
Remove the rust from the internal parts and keep it clean, oiled, and sharp and it will continue to serve you well.
Click to expand...
Would you please introduce how to remove the "rust"? especially from internal parts, seems it's not possible to disassemble and assemble again.
On the other hand, is the carbon steel more easier rusted? As mentioned in OP, the rust didn't happen on the rest of 2 knives
 
If this is available to you, soak the entire knife, rinse it off, apply oil generously.

where-to-buy-evapo-rust-1-quart-near-you.webp

I would cover the blade, spray WD-40 into the internal parts, then wipe it down. If not being used for food, just hose it down with WD-40.

Carbon steel will rust if some type of oil isn't used to protect the steel. You already put a patina on it, so that will help to protect it from rust.
 
The easiest way to remove as much as is going to be meaningful will be to use fine #0000 grade steel wool (the stuff that actually feels like wool) to buff all of the available steel surfaces, then run thin oil down into all of the mechanism interfaces and work the knife joint open and closed repeatedly, wiping off the dirty oil that weeps out of the pivot and backspring until no more crud comes out. It's a bit time-consuming but it'll get all the crud out. It will never be returned to the as-new state. Even if trying to get the original finish back you'd have to completely disassemble the knife and grind the blade down to fresh steel. Completely impractical. Instead, if you don't like the current blotchy finish, you can try to induce a more uniform forced patina using other methods. Otherwise, don't worry about it and permit it to develop its own patina with use.
 
Carbon steel rusts. Oil will prohibit the rusting.
Use 0000- steel wool in small pieces pushed into the blade well (the opening.) Move them around with a broken wood toothpick or skewer to dislodge as much internal rust as possible. Do this while the knife is dry. Tap the knife on a hard surface to get as much rust/wool out of it as possible. Use compressed air if you have to to blow the knife out. You can clean the blade with the steel wool also.

After you have removed all the loosened rust and pieces of steel wool, oil the knife inside and out. WD-40 is very good for this. Wipe it dry. If the knife gets wet again, dry it and reapply WD 40.
 
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If you want to remove the discoloration I know lime juice and salt removes tarnishing from copper. Buff with a paper towel should be pretty easy and fast.
However I prefer patina on knives.
 
Mk-211 said:
If this is available to you, soak the entire knife, rinse it off, apply oil generously.

View attachment 2987816

I would cover the blade, spray WD-40 into the internal parts, then wipe it down. If not being used for food, just hose it down with WD-40.

Carbon steel will rust if some type of oil isn't used to protect the steel. You already put a patina on it, so that will help to protect it from rust.
Click to expand...
Thanks for reply, here in my location, there is a similar one: same from CRC, but it's said "super safe rust remover" instead of "heavy-duty rust remover" on the image in your post, is it also good to go?
 
There was a thread about a month ago, a member found his knife, with Damascus blade rusted.

He got most of the rust off, then used Evaporust to get the rest off. There was no damage to the blade or the etch of the Damascus.

It will remove the rust, I don’t think it will make the steel shiny new though. After rinsing the Evaporust off with water, blow it off with compressed air. WD-40 will get into the frame, use the straw to help blow out any water.

Keep a coat of oil on it, to prevent any rust.
 
Dextar said:
Thanks for reply, here in my location, there is a similar one: same from CRC, but it's said "super safe rust remover" instead of "heavy-duty rust remover" on the image in your post, is it also good to go?
Click to expand...
Yes, that should work fine.
 
Mk-211 said:
I would cover the blade, spray WD-40 into the internal parts, then wipe it down. If not being used for food, just hose it down with WD-40.
Click to expand...

Bill DeShivs said:
WD-40 is very good for this. Wipe it dry. If the knife gets wet again, dry it and reapply WD 40.
Click to expand...

Mk-211 said:
WD-40 will get into the frame, use the straw to help blow out any water.
Click to expand...

Dears, I just recalled that someone mentioned "Flitz" at the time I posted the rusted knife months ago.
Shall I also try it?
Then the process would be: CRC (remove rust), Flitz (polish), WD-40 (dry & protect)?
 
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