Classic cars forum & vehicle restoration.

[Billf]

Have you all heard of this product.


http://www.metalrescue.com/home.aspx

Bill.

[MikeEdwards]

If you look in the "disposal" section, it shows the colour the product goes after it's been used a bit. Looks just like the used jug of citric acid I've got on the bench now, a sort of dirty yellowy-green colour. The effects on the workpiece look quite similar to citric as well.

Can't see the price, that seems to be "POA" for international customers, so I can't compare - I last bought 2Kg of citric acid powder (which I think will make around 2 gallons of solution) for £8 in February.

[PAUL BEAUMONT]

Available on eBay!!

[MikeEdwards]

So, £30 + p&p for 1 US gallon. I can't tell from that whether it's used as-is, or whether it needs to be diluted. Still seems expensive to me, though not as expensive as some other products. I'm sure it's good stuff, just seems to be similar to citric to me.

[colwyn500]

Under the technical section it talks about the metal going grey or black. I would sat that it's likely to be phosphoric acid.
You can get unbranded acid for about £15 for 5 litres; it's very strong and since a posting concerning renovating rusty tools, I have been soaking a really rusty item in a dilute solution of it for several days. I'll rinse it and show a comparison tomorrow.

[baconsdozen]

I cleaned up some old chrome wheels with concrete remover diluted. Its basically sulphuric acid. Phosphoric based rust killers even turn cement black,they must work though,my workshop floor hasn't gone rusty!.
_________________
Thirty years selling imperial hand tools for old machinery(Now happily retired).

[colwyn500]

[colwyn500]