I need you to settle a debate for me. Does one tripoli/rogue
[polish] the inside of a ring?
The goal is the desired finish. How you get there is your choice.
Whether you need to use emery depends on what you used before hand.
If you used a file, you’ll need emery or some similar abrasive,
unless you want to spend a lot of time with the tripoli or whatever
other cutting compound you use. if you already used some sort of
sanding medium, rubber wheels, emery drums, fine abrasives of any
sort at the workbench, then at the polishing lathe you may not need
to use emery again. But in general, before tripoli, you should
normally want a fairly smooth finish. Files are usually too coarse.
It’s your choice, however. After the cutting compound, (tripoli,
greystar, or others) gets all the scratches out and leaves a dull but
smooth surface, then rouge (note the english spelling, Gian…) gives
you your final finish.
Tripoli alone may be enough for some items, if the desired finish is
not a high polish. If you wish to use only one compound, White
diamond tripoli or something finer than ordinary brown tripoli, might
be a better choice, giving a slighly higher finish. And if you use
fine emery first, there are some more aggressive rouge products, like
some of the yellow rouge types, that have enough cut to take over
after fine emery, yet give you a decently attractive polish. Not as
high as red rouge, but often close enough.
But for the record Gian, I do it your way. Emery to get the coarse
marks out, then tripoli or other cutting compound to get the emery
marks out, then rouge. Skipping a step may seem simpler, but actually
takes longer, I think.