I made some standoffs for a friend's motorcycle. He wanted them in steel as that fits the look he's working towards


Untitled by Matey-O, on Flickr

I was using carbide and didn't bother harpening a HSS bit for a better surface...for grins I chucked up a bit of scrap aluminum to show him what he could have had...a little automatic feed and a little Mother's aluminum/Mag polish and it looks like a mirror surface.

But does the Aluminum polish seal the surface, or would it start to look oxidized and crappy after a bit in the Real World? Any recommendations on treating it so it remains mirror shiny?