etching face plates with FeCl

[KA4HJH]

Yoshi wrote:
>Has anybody tried etching anodized face plates with ferric chloride?
>Anodization (Don't ask me if this is a word) is supposed to stop Al from
>corroding, will it have the same effect with the Fe Ch?

Persulphates work on aluminum. Anodization hardens the aluminum near the
surface by changing its crystaline structure. If the aluminum is submerged
in a dye during the process, the dye permeates the metal and is trapped,
permanently coloring it.

Terry Bowman, KA4HJH