billh wrote:
Windex, or any ammonia-containing brass or copper polish, is very bad news for brass. DON'T use it - the ammonia compounds get under the brass ferrules, into cracks and crevices, etc. and eat away silently.
Interesting. That does appear to be so, resulting in a problem called
season cracking. But the necessary factors seem to be prolonged or repeated exposure to ammonia or ammonia vapor, high temperatures, and highly stressed metal. None of which I'd reckon would be major factors in a one-time polishing.
Anecdotally, I've noticed no long term ill effects from the use of Simichrome (which contains ammonium oleate) on my brass whistles or fittings. The amounts applied are tiny, and are buffed and evaporated off immediately. Still, this is good to know about.
MTGuru wrote:
A lot of people recommend Sunshine Cloths ... These Japanese-made chem cloths are non-abrasive
Just adding ... I'm actually not 100% sure if these are non-abrasive or micro abrasive.
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