The only true way to know how the anodize coating is, is to measure coating thickness with a Eddy current meter. A meter too expensive for the majority. Parts anodized too long have a chaulky residue on them that can usually be buffed off if it's not to excessive. The cheap way to check the anodize, would be to dye a test part to see how the dye takes. The 720 rule has been proven and I haven't had any problems since I started using it for my setup. I could give you better figures if I had more info on your run. A amp setting of 6-8A at a current density of 4.5A calculates a surface area of 192 to 256 square inches. A 192 in sq SA at 4.5 CD calculates to a 6.0A setting for 84 min. to get .5 mil coating with a peak voltage of 11.25V. The use of Ti racking will change alot. You will need to up your current to compensate for the racking. How much will be dependant on the racking you have. If I remember right M_D uses Ti racking and can help in that area. From what I can see and calculate your probably anodizing too thin because of the Ti racking. Your current and times are good for wire hanging.
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