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Oxalic Acid Powder to remove rust - what ratio/how long?

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griff:
evening peeps

got some oxalic acid powder on the way from ebay to try and deal with some of the more crusty parts of the superfox
can anyone tell me what proportion of powder to water I need and how long to leave it in for?

oven cleaner/hammerite rust remover hasn't done much to be honest so thought this would be worth a go (then back to bendycat's peek/goddard's cloth stages)
now I just need to find a shallow tub long enough to fit the frame in!

thanks for any advice  :daumenhoch:

Rodgy1970:
I got some a while back and I tried it out but I didn't note the ratio, does work well though.

The supplier said 250g to 1 litre but I reckoned that was a bit generous, I think 250g to 5 litres would work, if it didn't you could try 500g to 5 litres, it shouldn't do the steel any harm as far as I've read anyhow.

When you've finished you can use it to wash a concrete path or patio or path if you've got one.

goosegp:
had some good results with OA
i mixed about 500g / 10 litres but i think it depends a lot on how patient you are, more diluted the longer it will take.
i ended up buying a cheap large square kitchen bin and dipping half a frame at a time. filled excess area around the frame with stones etc to reduce volume and then less mixture required.
didnt do any harm to steel or decals
just leave it in as long as it takes for the rust to react, you cant really leave it to long. left my frame in over night.
give it a good scrub and polish after.
i would recommend wearing some goggles to protect your eyes.

good luck

griff:
thanks peeps for advice - will give the thing a bath when I get chance and post pics of how it goes!

cheers

griff

Clean:
Griff,

Very interested in how you get on, please, mate. ;)

Got a similar job to do and keen to learn!  :-\

Probably will do it this Sunday, so let me know if you get there first and what you discover.  :daumenhoch:

Thanks,

Clean. (now ain't that ironic)!  :2funny:

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