Stubby,

Loop your emery cloth around the pipe. You should be able to easily
polish about 1/2 (the bottom and some of the sides) the cylinder with the
loop held straight up and down. Now move the loop out of the vertical and
you should be able to polish more of one side. Repeat by moving the loop
appropriately until the sides are on pretty good shape. A finger or a
Popsicle stick can supply the pressure to shine up the top.

Dave M.