How can I effectively buff a polyurethane finish to achieve a smooth and glossy surface?

To effectively buff a polyurethane finish for a smooth and glossy surface, follow these steps:

1. Start by sanding the surface with fine-grit sandpaper to remove any imperfections.
2. Use a clean, soft cloth to apply a small amount of polishing compound or rubbing compound.
3. Buff the surface in circular motions with a buffing pad or a soft cloth until the desired gloss is achieved.
4. Finish by applying a coat of wax or polish to protect the finish and enhance the shine.