Well, it may sound silly but all Ive turned in my Leadwell LTC-15 is stainless steel and tool steels with moderate tolerances (.005). I havent done any 6061 aluminum yet, and I am wondering what kind of tooling I should use. I was told to use High Speed Steel to turn it, for a nicer finish. The part im making has a .0004 tolerance, so I could use some help as far as speeds and feeds go as well. Like I said before, no experience on this type of material, let alone with such a small tolerance. Am I headed in the right direction with the HSS on this or not? Anything to set me straight would be appreciated. Thanks.