On Mon, 6 Aug 2007 15:54:56 -0500, "John Scheldroup"
wrote:

Guminess is due static cohesion, so you might need electricity to cause
that. What happens here, that aluminum gums up is something similar
to induction between two molecules, the valence exchanges one electron
with to its neighbor, however, aluminum always has one floating around
that's why it attracts another from its neighbor so it doesn't know the
difference between neighbor and itself, so what you get is a strong
non-conductive static bind which can cause gum build-up.

GAK
Aluminum is an electrical conductor ... and (in the pure form)
it's crystal structure is cubic (face-centered) (ccp).
http://www.webelements.com/webelemen...t/Al/xtal.html
--
Cliff