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Old 3rd November 2016, 10:32 PM
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aTOMic aTOMic is offline
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Join Date: Feb 2012
Location: Moronville, TN (Middle Tennessee), USA
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Seems I remember boiling in simple H2O will cause a surface layer of aluminum oxide to form - a very durable substance. Only trouble is it's a matte gray finish AFAIK.

Yes in the US I bought some "Air Conditioner Coil Cleaner" liquid which turns out is simply a strong sodium hydroxide (lye) and water solution. It foamed up madly and removed 40 years' worth of dirt from my evaporator and condenser coils on the home HVAC, and shined up my dear departed Granma's espresso (moka) pot. Can't one buy lye drain opener in the UK?

Haven't experimented much with it as it requires full protective gear which is HOT and cumbersome in the Tennessee heat... and I actually heed warnings to the point of buying a $90 respirator w/ organic vapor filter for this job. Along with industrial rubber sleeve gloves, face shield, etc.. Having worked on an ambulance here in "Hey man, hold my beer and watch this!" country, I've seen some things...
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