I've got items of door furniture (letter box, knocker etc) that are
made of solid brass but they've not been polished for years so they're
pitted and looking very tired.

I've tried Brasso and lots of elbow grease but I'm just not getting
down to a level where it would make a difference.

So I'm looking for the best way to get them all buffed up by using
something that I can attached to my drill.

Any guidance would be much appreciated.

VT