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Proof that Evaporust is amazing...updated

skrit

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A Horse with No Name
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Apr 24, 2006
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395
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Durham
Thought these brake calipers would end up as cores for new ones. Decided to try Evaporust that I got from Harbor Freight. 24 hours later the results speak for themselves. No wire wheels, no scrubbing ... amazing. Worked great on the spindles too.
20241003_232933.jpg

20241003_233006.jpg

20241007_201212.jpg

I'm going to see what it does with that rusty spindle in the second pic.
 
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mattyv87

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May 15, 2011
Messages
96
Keep us posted on the spindle. I have a pair that has very minor rust on it but was being lazy and wanted to just soak it.
 
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skrit

skrit

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Keep in mind that the real issues with calipers are inside, corrosion from brake fluid and moisture causing the pistons to stick and/or the pistons seals to leak.

The parts do look fantastic
Agree. Those were new, never used calipers I had sitting in a bin for 10 years with sealed ports so they'll be good as new with some paint.
 
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skrit

skrit

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Okay.... the spindles were really rusty and scaly. Here is how they turned out after 24 hours and a water rinse.

Before (middle):
20241004_123301.jpg



After:
20241008_183913.jpg

20241008_183920.jpg


I rubbed a green Scotch Brite over the one on the left for a few minutes just to get the haze off. I think with a minimal amount of work they are salvageable. So I'm very pleased with Evaporust. Just don't expect it to magically fix pitting. I bet with a scotchbrite wheel they'd polish on up with minimal material removal.

20241008_185303.jpg
 

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mattyv87

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Definitely cleaned up a lot. My concern was bearing and mating surfaces changing from getting etched. The spindles im looking to use evaporust on just have a slight bit of surface rust. Nothing major.
 

dougyounger

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Full Member
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Apr 8, 2005
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How is the used evaporust supposed to be disposed? There website simple has the generic, follow local, state, and federal rules.
 

DirtDonk

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Bronco Guru
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Nov 3, 2003
Messages
48,743
Because it’s essentially nontoxic, other than what might get put into it by the user, it can be disposed of fairly easily. And I’m a greeny tree hugger type, so I don’t take that kind of stuff lightly.
One of the best ways they say to get rid of it is to put it on your lawn. The iron oxide doesn’t seem to hurt! I think during one commercial, they said it was similar to some fertilizers.
Maybe there’s some YouTube info on it? Questionable as that is sometimes, this should be a pretty straightforward question.

Regarding the black, they say that the harder the metal is, the blacker the results. Where a mild casting might come out looking natural, a knife blade, file or chisel, can get a black oxide coating on it.
I found that true on clippers, trimmers and blades, but never tried to, scrub it off. So don’t know what the results would be on a spindle.
 
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skrit

skrit

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Messages
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Definitely cleaned up a lot. My concern was bearing and mating surfaces changing from getting etched. The spindles im looking to use evaporust on just have a slight bit of surface rust. Nothing major
Here are the mating surfaces.. no issues but could use a polishing
20241009_155558.jpg
 
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skrit

skrit

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It can be reused until it quits working. Filter and put the used in a different container.
Agree. That's what the direction say...reuse. The used stuff is dark black but still works. I threw this bracket which was really crusty in last night and this is what it did after doing 2 big calipers and 6 spindles.
20241009_181707.jpg
 

hyghlndr

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Hockessin, Delaware
You would be surprised that dollar store vinegar and a drop of dishwashing liquid will do basically the same thing. I have done whole rusty seat frames in a cheapie dunk tank, they came out great.
 

EPB72

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Jul 13, 2019
Messages
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Loc.
Pleasant Hill, CA
raw Unsulphured Molassas mixed with water works very well too , ONe jar grandmas molassas to 3-4 gallons water in a five gallon bucket, or plastic garbage can ,, But the more u use it ,It starts to get stinky, .. Oleanders dont get effected from it,,
 
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