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From: "Tom Ballou" <TBallou@LANMAIL.RMC.COM>
Date: Wed, 19 Jun 96 8:05:16 EDT
Drano is Sodium Hydroxide.  It will not just etch your Aluminum, it will 
dissolve it completely and very fast.  NaOH is the active chemical used to 
extract Al from Bauxite.  Be very careful.  If you want to clean Aluminum, I 
recommend Oxalic Acid, Phosphoric Acid, or Hydro-Fluoric Acid -  All very 
dilute.  BTW, all will cause great discomfort from skin contact (HF will also 
eat glass, steel and most other things fast - it's really not for amatuers 
unless it is really dilute).  The caustic (NaOH) will do the same thing to 
your body that it does to Aluminum, in about the same time.  BE CAREFUL!

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