how do i anodize aluminum?

thinking of anodizing some aluminum parts im making. Does it matter what kind of aluminum? I want a durable finish, resistant to corroding.

shenrie15 years ago
Alloy only matters in if you can actually anodize it. High silicone content aluminum is resistant to anodizing.
frollard8 years ago
nurdrage has some cool videos on youtube (And a few awesome instructibles on here too).
lemonie8 years ago
This explains one method of how:
And another:

Not sure whether the alloy makes much difference or not.