I used to use Gunk in the old days, but I didn't get on with the new stuff. And having to wash it off with water is not always convenient.
Paraffin is good and cheap. Its often my first choice.
As for polishing, check out 'The Polishing Shop' at Cannock. They'll sell you an arbour that fits to a std bench grinder (or spare electric motor of your choice) for less than a tenner. It attaches with just one grubscrew and has the taper thread attatchment to take a polishing mop. They also sell a range of mops and polishes etc. If you're not in a hurry, they often have a stand at the major bike shows.
And if in doubt, go for the 8 inch, for the higher surface speed.
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