Originally Posted by Stepchild
I'm not a fan of using constant Voltage at all. To each there own but I have always had much better results with constant current.
If I remember correctly caswell's ano forum had a post with a list of paintball parts and guns with their approximate surface areas somewhere.
Another way to do it. Get a test piece of aluminum that is exactly 1 sqft. Put it in the ano bath and adjust your voltage to the point where you are getting the amperage you want. Say 6 amps. This will give you the voltage you need to run to get the 6 amp/sqft you want for your specific ano bath. You can then put the parts in the ano bath without measuring the surface area. Now put you rectifier in constant current mode and turn the current up until your rectifier holds the previously determined Voltage for a min or so. This will set your rectifier to run at 6 amps/sqft no matter what the surface area is.
If you want to test it. Put a 1 sqft piece of Al in the ano bath and find your voltage to run it a 6 amps. Then put a 2 sqft piece in there and turn the current up until you reach the same voltage. You will be running at 12 amps give or take.
OK, with that said. This is not a full proof method but does work well. The voltage you will want will change over time as your acid bath changes. So I would recommend re testing every month or so to make sure it hasn't changed a lot. I have been using this method for years now without a single issue as long as I re test every once in a while.
This is how I operate, but I didn't figure he had a chiller to the keep temps consistent so I recommended to just run at 15v. I figured it would be less figuring for him with little change if any in results.
I guess I might have chosen my words wrong. Technically you would still be running in Constant Current. You would just be setting your voltage at 15v and noting your current.
I am unfamiliar with switching between constant current and constant voltage. My power supply is just a simple cc work hoarse. I would say keep your PS in CC mode if that keeps current steady and lets voltage fluctuate.