Been there and done that, we cut the time back now for clear parts, otherwise they get tinted. We anodize ours at 9-10 amps current density on Ti racks for about 30-35 minutes, and they look good. Thats about .0003-.00035" thickness going by the 720 rule. As a comparison, we do the colored parts 50-70 minutes, depending on alloy, intended final color, and type of surface finish (as machined, tumbled, etc.).
Your setup might be different, and so some trial and error testing may be required to get it dialed in. Also, I think lower current density like 5-6 amps will do a nice job too. If you are polishing them up good before hand, you should be able to get a very attractive clear anodize, better than bright dip in my opinion. Parts that are bright dipped are often anodized for shorter times or lower current density, even when colored, to preserve the gloss and clarity.
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