What are the best application techniques for achieving a smooth finish with Polyurethane Minwax?

To achieve a smooth finish with Polyurethane Minwax, it is best to apply thin, even coats using a high-quality brush or foam applicator. Sanding between coats with fine-grit sandpaper can also help to achieve a smooth finish. Additionally, allowing each coat to dry completely before applying the next coat is important for a professional-looking result.