Recipe of the month:Vinegar Custard

[karl]

So i heard about soaking parts in vinegar to remove rust,
and i have tried paintstripper, the evil stuff.
Reckoned i needed a big bath and lots of vinegar to soak a frame.
Then again if i made some sort of gel, like the evil stuff. hmm..

Recipe!:

Cook some vinegar to the boilingpoint.
Ad cornstarch, premixed with vinegar in a cup.
Stir till it gets snotty.
Smear it with a brush on anything rusty.
(doesnt that look atractive?)

Marinate for 24 hours, then wipe of.
(different crankset, premarinated. The bell was a testcase, i cleaned one half of really thick crust)

Hmmm! Deliciously clean parts!!
Tip: use a plastic bag to put your parts on.

 

[dogdart]

off to the kitchen !

 

[RadOne]

skeet, skeet :lol: ha ha ha ha

 

[NLCTVWguy]

We actually use a process in our plant for cooking cornstarch- it's added to paper to make it stronger. it's mixed with water to make a white liquid, then heated to just about boiling, and it comes out like you see, snotty. Cooks into a clear gel. That's pretty much what you've made there, forming a thick layer to retain the vinegar on the parts you're cleaning.

Not a bad home brew...

 

[karl]

Not bad??
Before:

After..
Eco-friendly , cheap, really easy, and even better:

Weak acids can dissolve and loosen the crumbly hydrated iron oxide (which is what rust is) to form a soluble salt, they also replace it with a thin film of smooth hard oxide on the surface of the iron to help it resist further hydrated oxidation.

In other words, the vinegar transforms the surfacerust into a rustfree coating on exposed metal, which then can even be painted over..
Waddayamean not bad :wink: