Machining Plate Aluminum

[gobigracing]

My part is made out of 6061 aluminum. I want the part made out of 3/4" plate aluminum but the side need to be machined(this just means the cant have a [-- login to view link --] or [-- login to view link --] type finish and angle). Then I wanted the whole part to have a chanfer on both sides. So in conclusion I am need a part made out of 3/4" 6061 plate. And the only machining needs to be the sides and internal cutouts.


Here are my questions:

Do I need to specify not to [-- login to view link --] down to 3/4 but just begin with 3/4" plate?

How do I make sure my parts cutouts and sidewalls will have a milled finish? I know it has to do with surface finish but I do not know what values mean mill finish.


Thanks

[Tech2]

Please see:
[-- login to view link --]