[FONT=arial][/FONT]Hi all,
I am having a problem with an A356 aluminum casting that is machined and is anodized. These parts have some surfaces that have a 32 ra finish. After the parts were machined the finish was measured at 9-18 ra. After the anodizing process the pats are now measuring 46 ra. I have never had a surface finish double after an anodizing process. Has anyone else had this happen?