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Newbee w/ question about blade coating

T

Turtle

Joined
Apr 5, 2000
Messages
3
I recently purchased a Microtech M-Socom with a black blade (my first coated knife). While peeling an orange I noticed the blade left a black stain on the peel. The blade color also dulled a bit. Is this normal? Any idea what happened?

Thanks.
 
Welcome to the forums!!
I'm not sure about your Socom. I wouldn't think an orange would mess up the coating, but you have the evidence. If no one else answers here I would post this question in the Microtech Forum over at www.knifeforums.com (I think its still there.)


Blades

[This message has been edited by Blades (edited 04-05-2000).]
 
Never had that happen with the few knives I have that are coated, but I'm guessing it has to do with the citric acid in the orange. Any chemists here?
 
Did it just happen with knives when new, or did it continue happening after the knife was reasonably used? If it was just when new, I'd say it was simply manufacturing residue on the surface, which was cleaned off by the acid. If it continues to happen, then the coating is either defective, or they just use cheap coating as SOP.

--JB

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e_utopia@hotmail.com
 
MT knives tend to have a thin coat of prtective oil or something similar on them when they're new. The citric acid probably removed it. I used to use lighter fluid to clean sticky stuff off my baldes. When I used it on one of my SOCOMs it turned the blade grey! A wipe of oil of Tuff Cloth returned the colour. I hope this helps.

------------------
"Better to reign in Hell, than serve in Heav'n"
John Milton
There are only two types of people; those who understand this, and those who think they do.
 
Citric acid is a rather weak organic acid, and I would not expect it to have any apprecable immediate effect on blade coating. Of course, if the original poster were to simply clarify what happened, then we wouldn't have to speculate. Walt
 
Thanks for all the responses. The knife is still very new so I spent some time cutting various materials last night. It cut wood, cloth and cardboard with no ill effects. Orange peel did continue to take a stain at first but stopped after the third orange. So, I think it was just residue or a thin top coating being washed away by the acid. The blade color has dulled a bit but I will try Johan's suggestion and pick up some Tuf Cloth.
 
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