What are the best techniques for applying floor shellac to achieve a smooth and durable finish?

To achieve a smooth and durable finish when applying floor shellac, it is important to properly prepare the surface by sanding and cleaning it thoroughly. Apply thin, even coats of shellac using a high-quality brush or applicator, and allow each coat to dry completely before applying the next. Sand lightly between coats to ensure a smooth finish. Additionally, consider using a topcoat or sealer to enhance durability and protect the shellac finish.