Rust and corrosion solutions?

[Neil WyattModerator @neilwyatt]

Posted by pgk pgk on 25/07/2016 11:00:18:

EDIT – I jst found the pdf instructions.. do not use on aluminium but can use on cast iron:

**LINK**

Edited By pgk pgk on 25/07/2016 11:03:18

Alkali based again. Aluminium is 'amphoteric' which means it reacts with both acids and alkalis.

Neil

[Cyril BonnettParticipant @cyrilbonnett24790]

Anyone tried this for Aluminium

http://www.aptcommercialchemicals.co.uk/aluminium-cleaner-2

 

Edited By Cyril Bonnett on 26/07/2016 22:51:01

[mark smith 20Participant @marksmith20]

Posted by Neil Wyatt on 25/07/2016 14:34:30:

Posted by pgk pgk on 25/07/2016 11:00:18:

EDIT – I jst found the pdf instructions.. do not use on aluminium but can use on cast iron:

**LINK**

Edited By pgk pgk on 25/07/2016 11:03:18

Alkali based again. Aluminium is 'amphoteric' which means it reacts with both acids and alkalis.

Neil

Not strictly true. Aluminium forms oxide/hydroxides that are amphoteric.

Evapo-rust seems popular in some circles, it works by chelation.

[Speedy Builder5Participant @speedybuilder5]

Rust in the tank – I would clean the paraffin out with soap and water, then use JENOLITE to kill the rust, Swish it about a bit to get into the seams etc, Then remove it, thoroughly wash with clean water, dry it and apply your tank sealer. I did this to my Austin 7 tank about 25 years ago and its still tight as a drum – even with the change to un-leaded fuel.
BobH

[Neil WyattModerator @neilwyatt]

Posted by mark smith 20 on 27/07/2016 00:04:54:

Not strictly true. Aluminium forms oxide/hydroxides that are amphoteric.

Evapo-rust seems popular in some circles, it works by chelation.

My chemistry is over 35 years out of date!

Yes I tried Evaporust on the other half of the crankcase, it loosened the deposits and made mechanical removal easier but the results were far from as spectacular as it gives with steel.

Neil

[Martin King 2Participant @martinking2]

Neil, +1 for the Allendale Ultrasonic bath! Have had one for some years now, it gets daily use and the resuts are excellent, especially when hot. Superb for cleaning honing and slipstones, followed by a quick scrub with acetone they come up like new. Great for old oil cans and all odd parts. I even chuck the Rolex in it when it is filthy but NOT heated…, great for jewellery also. I just use water and a bit of Fairy liquid.

Martin

[Frances IoMParticipant @francesiom58905]

somewhat related question – what is recommended for stripping cellulose based paint off aluminium ? – I have a badly scratched steady for my Perris lathe I’d like to repaint

[Phil WhitleyParticipant @philwhitley94135]

I have had great success with a bath of cider vinegar, expensive unless you make your own, but it brought a lot of tools back from the skip to pristine! for example a set of badly rusted but very nice thread gauges cleaned to the point where all the engraving was clear and easily readable, just ferment a big tub of apple mash in its natural yeasts and water, then immerse the items for a day or so, it is truly amazing!!!

[Neil WyattModerator @neilwyatt]

Posted by Phil Whitley on 27/07/2016 21:24:52:

just ferment a big tub of apple mash in its natural yeasts and water,

Hey! We aren't all Eddie Grundy you know

Neil

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