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Evapo Rust Part I

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Vegaman_Dan

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Joined
Jun 1, 2012
Messages
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Location
Pacific, WA
You might try putting a solid object into that pan to displace the volume so you can either use less material, or get it to fill up at a higher level for deeper coverage. Even as simple as some rocks can make a difference.
 

Canoe50

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Feb 8, 2012
Messages
234
Location
Rochester, NY
I recently tried Evapo Rust for the first time on some tools I bought used with very good results. I have a knife that was stored improperly & formed rust on the blades. It's been soaking for a couple days now, but the blades are turning black. It started after about 24 hrs. Anyone have that happen & any idea what's causing it? I haven't tried removing it yet, but hoping I can polish it out with wax or something else. :dunno:
 
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trbomax

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Mar 21, 2010
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Location
starvation lake,mi.
The "black" is what we call "smutt". Its an oxide coating created during rust removal.It does clean off w/ steel woll but its a pita and you will have to oil the part as soon as its dry to stop flash rust.
 

Dave.R

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Joined
Aug 31, 2011
Messages
384
Location
Grand Rapids MI
The black is caused by the carbon from the steel when the bonded iron oxide is removed from the steel. The evaporust takes the iron but leaves the carbon. Here's a great break down from a chemist with Red Kote products. I was asking if Evaporust would work with the coating.

"I was very apprehensive about this product when I first heard about it, because I believed it to contain phosphoric acid. We do not recommend phosphoric acid, as it is a “rust converter”. It would need to be scrubbed off, before Red-Kote can be applied.

Evapo-Rust, however uses iron chelation technology. The chemicals bind the metal ion so that the metal ion cannot interact with other elements. When the ion is bound, this creates a complex molecule that can be washed away from the surface."

Worked amazing on my motorcycle tank.

<a href="http://imgur.com/O5WPVF8"><img src="http://i.imgur.com/O5WPVF8l.jpg" title="Hosted by imgur.com"/></a>

<a href="http://imgur.com/aIlCbmX"><img src="http://i.imgur.com/aIlCbmXl.jpg" title="Hosted by imgur.com"/></a>
 
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Canoe50

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Feb 8, 2012
Messages
234
Location
Rochester, NY
Thanks guys.....appreciate the input. This is a older USA Winchester knife (Blue Grass Cutlery...when they were made really well) & the blade is definitely carbon steel. So is it safe to assume this wouldn't be a issue (or at least not as severe) if it was stainless?
glenmore...I tried wiping it off with a rag, very little came off.
 
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