Originally Posted by crazzy88 yg
Yes steel wool will contaminate the thread. Already stated a couple pages back.
The only other person besides you to comment on using steel wool said that it would cause scratches (guess what sanding is?), and cause a poor finish, not that it contaminates anything, including the "thread", whatever in the hell that is. And I'd be interested in hearing the how and why of it. There's no conceivable reason why steel wool would "contaminate" aluminum, but tiny grains of aluminum oxide or silicon carbide in sandpaper wouldn't. Reading here: http://asuwlink.uwyo.edu/~metal/anodizing.html
and here: http://www.focuser.com/atm/anodize/anodize.html
, steel wool is actually recommended for finishing raw aluminum before it is anodized or re-anodized. So I'm not entirely sold on the "steel wool contaminates aluminum" thing. The point is somewhat moot anyway, because very fine steel wool is used at the finishing stage, and the OP has got about a week worth of rough sanding and smoothing before he'd want to think about using it anyway.