A quick buffing got some shine on this caliper but the dents and deep scratches will require some heavier sanding and grinding

The tiny buffing wheel worked ok on the slower air die grinder but this electirc one was too fast and it fell apart. So I rigged a 6" spiral sewn wheel on a disc sander and held it on with an arbor nut off my angle grinder of the same brand.

The buffer was even able to remove the brown discoloration at the top of these pipes

I used the orbital sander to smooth out the rough area where the reflector would attach, and a cloth buffing wheel on a pneumatic die grinder to polish

A buffing wheel on a die grinder quickly brought out a mirror finish on this hazy old aluminum cover

I went to work on this piece for a couple hours with a dremel and orbital sander to dig out and smooth the deep dents and scratches, then gave it a coarse buff to get it to this point. Not perfect yet but a big improvement

another shot of the aluminum caliper body after being sanded smooth

This shot shows a good comparison between the buffed and un-buffed areas

Coming along but I still need to pull the calipers off for restoration

The buffer of death made short work of this surface, it even removed the raised logo from the middle of that circle