The picture of the tool you posted is the correct concept. I would shop around and look. Ask a lot of questions before purchasing. How does the tool work on aluminum? Make sure it coincides with the diameter hole you need to penetrate and can cover the surface you want to clean up. (that's a duh, but thought I'de add it).
I like the scotchbrite idea, sounds easy and much cheaper.
You can get that at Mcmaster too.
They also have sanding sponges that come in really fine grit.
I also agree with the "chuck up your stick and hold the part"
Just be careful. No gloves, no long sleeves, and wear glasses. And do not let anyone tell you they made a great "wrench" to hold the part in while you do it by hand. Seen that go bad more than once. Low rpms good idea. Last thing you want is an aluminum bottle in the face. that might f^$k up the rest of the day!
Hope that helps.
Chris |