How to deal with rust???

Gallery, Projects and General > How do I??

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Bluechip:

--- Quote from: arnoldb on April 09, 2011, 01:44:52 PM ---Hi Benni

Like mentioned, vinegar or Naval Jelly will do the job; in fact almost any acid will remove the rust - diluted pool acid (Hydrochloric) or diluted battery acid (Sulphuric) will do the job, but are dangerous, toxic, and difficult to dispose of. Citric acid is a good choice to consider - it is environmentally friendly and non-toxic.

The electrolysis method usually requires caustic soda, and would be difficult to use on small parts, but is very effective.

If you use any acid to remove the rust, just make sure you give the bits a good wash in detergent water to get rid of any grease or oil first.

Immediately after removing from the acid or electrolysis bath, rinse the parts in clean water and coat them with oil, otherwise they'll start to rust again immediately.

And if you don't feel like messing around with chemicals, a bit of manual work with a wire wheel or a "scotchbrite" pad will also remove light rust.

Regards, Arnold

--- End quote ---

No need for Caustic Soda, ordinary Washing Soda ( Sodium Carbonate ) is quite adequate.

We've been through electrolytic de-rusting before BTW ..

http://madmodder.net/index.php?topic=1651.0

Dave BC

Hobby-Machinist:
+1 on white vinegar- it is cheap and non-toxic, turns the rust to a greyish residue that can be scrubbed off.

+1 on Naval Jelly- more expensive, but tried and true.

Nelson

AR1911:
Evaporust!

PTsideshow:
A word on the the use of vinegar, it will all so remove thin plating from the screws and other hardware. And be sure to wash them off well or neutralize them with baking soda and water mix. And then dry well as they will flash rust when removed. And when doing larger hardware you do have to keep an eye on them as some times depending on the alloy they will start to oxidize as soon as they hit the air.

You should remove any loose rust before putting them in the vinegar, with a wire brush.

dedaddy007:
I have removed the rust from everything from nuts and bolts to car frames using EvapoRust. I use it extensively cleaning up old tools and woodworking planes. It is non-toxic, ph neutral and oder free. It will not touch paint, base iron, aluminum, plastic, wood or anything that is not an oxide of iron. It rust proofs cast iron. See the website www.theruststore.com for more information. You can get it at most automotive stores, Caswell Plating and some Harbor Freight stores. I buy it in 5 gallon jugs as it lasts forever until used.

The one thing you have to watch out for is it takes off blueing, black oxide and some anodizing.

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