Rust and corrosion solutions?

Still on rust but slightly different.vane. I have a 1950's motor bike petrol tank which was very rusty inside. I put in some paraffin and stainless steel screws shook it around, kept replacing the paraffin until it came out clear. I bought proprietary resin suitable for lining petrol tanks, the leaflet said I might need to apply another product before the resin, but didn't say what or where to obtain the product. A friend suggested the same product plumbers use to flush out heating systems. Suggestions and ideas most welcome.. John

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What a curious way for anyone to do business !

Does the 'proprietary resin' have a name ? ... If so, we may be able to find the MSDS, which would give some clue regarding which other products might be compatible.

MichaelG.

Well i would never have expected such a strange phenomenon, to be fair when he was about to remove it from the tank i thought the heatsink would look like a dog chewed it up but it actually removed material in a rather neat and even manner, but eating away nonetheless not desirable unless you could control the reaction.

Michael W

I was just wondering if anyone has used a poutice type product to clean up castings? I had original marble fireplaces in my last house.. one covered in paint and stuff the other full of rust coloured stains and general filth. The resuls on those of using 'Kling strip' were impressive. It;s not just a paint remover it appeared to actually suck the dirt out of porous stone and might/might not have that effect on porous metal..

(the marble was then hand waxed as a sealant)

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

http://www.stripperspaintremovers.com/pdfs/Kling-Strip%20Usage%20Data.pdf

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

Anyone tried this for Aluminium

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

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

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

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

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

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!!!

Hey! We aren't all Eddie Grundy you know

Neil