[Public-list] Water tank cover

[Michael Grosh]

>The original anodizing is gone so now it's just plain sheet
>aluminum.

Anodizing is just a chemical process that accelerates and magnifies the 
creation of aluminum oxide (rust, if you will). It's the oxide that makes 
aluminum so resistant to degrading because it is an airtight seal, and it 
forms almost immediately on it's own, unless interfered with by some other 
process (I understand mercury really screws up aluminum's ability to protect 
itself).

Aluminum is a component of solid rocket fuel-highly reactive.

this 'sand' doesn't sound like aluminum flaking off-it sounds more like a 
salt; some kind of dissimilar metal reaction, perhaps?

Michael Grosh
#220
BTW cured epoxy is non toxic even if you do eat it, unless you plug up an 
intestine or something.



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