[acidrain]

My next experiments will be to take known materials and anodize in CC mode, noting what the voltages are for each.
It doesn't sound right, but Randy says in CV mode, the batch can be mixed alloys. The 7000 series parts will always ano faster, but they do in CC mode too, so it doesn't matter.
Obviously the Profesionals are anodizing at much higher CD's than us LCD guys, but he is running 15v for 1hr or so. My normal voltage for 6000 series is ~13v (at 6A/sq ft.), and I typically run for 1-1/2hr to 2hrs (depending on the thickness desired).
My fear is that if I was anodizing mostly 7000 series parts (unkown at the time) at that high of a CD, something bad would happen.
I guess only experimentation will tell.
I'm sure Fibergeek is rolling over in his grave right now.
The one thing that is absolutely critical in anodizing with this method is that the conditions have to be exact.
Ano bath temp.
Ano bath acid ratio.
Ano bath aluminum content.
Electrical connections.
Any other variables?