I've had a lot of product go through commercial anodization, type III, black, maximum boil. Very beautiful and rugged finish on all the extruded aluminum alloys. I've also played with DIY, type III, for very small parts count, and it was fun, interesting, useful, and easy to make a mess.
Please note and research this on your own , but my understanding is that anodization will affect the strength of your parts. If the parts are designed to be anodized or are massive, then strength loss is negligible. However, given the typically very thin, lightweight nature of aviation parts, structural parts should not be anodized unless the design engineer states otherwise.