One good online resource was Ron Newman's page about anodising at his Moonlite focuser site, sadly tho the page appears to have been removed. It is still available via the web archives tho:
http://web.archive.org/web/201310250...e/anodize.html
Another good source is the PDF manual for Caswell's LCD system, which is free to download:
http://www.caswellplating.com.au/LCD.pdf