First, get rid of the dremel and get a flex shaft. Next, get a
buffer and some polishing compounds, the minimum being a bar of
tripoli and a bar of rouge. There are many other polishing compounds
that you will learn about, but these will get you started. If these
two tools are beyond reach just now you can make do with felt backed
buffing sticks. Then get some wet or dry abrasive paper in grits 220
aand 320 at least. Take care when you are handling and tooling the
silver while you are making your piece to put as few unwanted marks
on the metal to begin with. Then, after whatever filing you have to
do, work the piece over with the 220 grit, clean the piece of any
grit which may have accumulated, and go to the 320. After that,
bring up a pre polish with the tripoli applied to the felt buff on
the buffing wheel or with the buffing stick. Clean again and do the
same with the rouge.
You mention that you are polishing silver sheet. If you mean
polishing large flat areas, that’s one of the more difficult tasks.
Recommend you stick with smaller pieces at this stage.
That’s a quick and dirty treatment of the polishing procedure, but
it can produce highly acceptable results. Good luck.
Jerry in Kodiak