OK,
I am having a problem with my anodizing layer not being as thick as I think it should be and not sure what causes that. I am following the LCD method and only anodizing freshly milled 6061.
Checked all simply things:
Parts well cleaned and degreased and pass water bead test.
Voltage and current is from a CC/CV power supply 55v/10a and both are correct and tested with 2 VOM's.
Not getting loose connections. ( well have got a few but easy to tell when that happens)
Set Amps (current) on power supply and Voltage always shows within 5% of what 720 calculator says they should be, so pretty sure I am figuring surface area correct. ( but they never seem to go down- just slowly go up to the 15-20 peak volts that the calculator says).
Acid mix is Napa battery acid mixed 1 part acid to 3 parts bottled distilled water ( 2 gallons to 6 gallons in big cooler.
Hold ano temperature between 68-72 - and doesn't look like I am getting any dissolution as no chalky stuff on parts.
BUT, I set up my ano about 2-3 weeks ago and While waiting for some more dye, HT sealer, etc. from Caswell I had left my cathode ( 12x12x0.
? roofing flashing - well cleaned and sanded and cleaned some more) in the tank.
in the 2-3 weeks it had totaly disolved so had to make another one.
So after all this, My question is, can too much dissolved Al in the Ano tank cause the ano layer to be to thin? or what does it cause?
I have read through the threads and do not have the equipment to do the titration test and will just replace the ano bath as it is cheaper and easier than all that.
Unless someone has any other ideas.