It is far different from an LP. (Larry, before you young whippersnappers started calling them "vinyl" we called them "wax". The older records in my collection are made from Bakelite, which was called "shellac".)
LP's are pressed in a mold that is machined to very tight tolerances. Every one will be identical.
The buff is made from sheets of cloth. These are stacked mechanically, stitched mechanically, and the center hub is drilled mechanically. There will be a variation of accuracy in the hole placement. Pieces of cloth may stick out a bit more than others, too. They wear round in use. A new buff rarely spins true. I take an old file and polish on it for a few minutes to "break in" a new buff.