It does take time and you have to continually check on the progress so you dont get to the point where the anodizing is gone and your aluminum trim starts feeding the chemical reaction instead. Here is the trim after about 5 hours. You can see the tiny foaming bubbles rising from the trim pieces.
Here is what the piece looked like at the 8-hour mark. You can see most of the anodizing is gone except in the corner area, whcih was the slowest area to dissolve.
