Mystery Sten Part

[Bruce_in_Oz]

The other brew that removes rust "passively" is a 50 / 50 mix of distilled water and Molasses. The latter can be found found at all good farm supply shops.

My late Dad used it for years to clean up bits of the various "vintage" vehicles he worked on.

ONLY for ferrous material; that brew does nasty things to Zinc or Aluminium alloys. Not much remains of a die-cast carburetor body after a few weeks in that stuff.

You can use the "exhausted" bath on your garden, too, unlike more "industrial" concoctions.

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[Flying10uk]

a 50 / 50 mix of distilled water and Molasses.

I saw that mixture being used to de-rust the inside of a motorcycle fuel tank on a TV program recently. They reckoned that it worked well.

[Flying10uk]

"industrial" concoctions.

The product that I normally use for chemical rust removal is phosphoric acid based. It does the job well but one has to follow the recommended safety precautions because it is an acid.