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#12268202 - 09/13/17 What is this staining on blued steel?  
Joined: Oct 2008
Posts: 1,082
MZ5 Offline
Campfire Regular
MZ5  Offline
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Joined: Oct 2008
Posts: 1,082
Arizona, USA
I just received this piece of blued steel, a new part for a rifle. The part has a complete coating of light oil, and was wrapped up. Those splotches you see that look a bit like hard water spots do not rub off or rub out by an oiled patch. I have the same thing to a lesser degree on the side of the receiver of a new rifle I just received. On the pictured piece, a couple of these areas have an almost rust color to them.

What are these stains? How did they get there? How do I get rid of them? Should either the pictured item or the rifle I mentioned be returned for refinishing?

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#12268293 - 09/13/17 Re: What is this staining on blued steel? [Re: MZ5]  
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Posts: 3,096
Tejano Offline
Campfire Guide
Tejano  Offline
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Posts: 3,096
Out Yonder
Not a gunsmith but looks like the parts were not hot enough to evaporate all the water and some spots were left that rusted. I would try some flitz metal polish and see if it does any good. Anything much more abrasive like steel wool will start to take the finish off although some get away with 0000 steel wool. You might try soaking with a penetrating oil like Kroil or transmission fluid for a day or two and then try.


"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli
#12268370 - 09/13/17 Re: What is this staining on blued steel? [Re: MZ5]  
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Poconojack Offline
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Poconojack  Offline
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The West Mountain
I'd be asking these questions to the individual that I received the parts from, they certainly would be unacceptable to me....


"When the going gets weird, the weird turn pro."
Hunter S. Thompson
#12271118 - 09/14/17 Re: What is this staining on blued steel? [Re: MZ5]  
Joined: Oct 2008
Posts: 1,082
MZ5 Offline
Campfire Regular
MZ5  Offline
Campfire Regular

Joined: Oct 2008
Posts: 1,082
Arizona, USA
Well, whatever it is, I've arranged to send the part back to its maker for repair or refinish or whatever.


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