In article , Ricardo wrote:

I had to heat up some stainless steel rod with an acetylene torch to
put a couple of tight bends in it. How can I remove the heat discolouration?


Mechanically. Buff the discolouration off with a flap wheel or whatever
is handy. Alternately you can remove a lot of the discolouration with
pickle paste.

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Mike Graham | Metalworker, rustic, part-time zealot.
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http://www.metalmangler.com| Caledon, Ontario, Canada