What are the best application techniques for lacquer-based wood filler to achieve a smooth and seamless finish on wooden surfaces?

The best application technique for lacquer-based wood filler to achieve a smooth and seamless finish on wooden surfaces is to apply the filler in thin layers, allowing each layer to dry completely before sanding it smooth. Use a putty knife to spread the filler evenly and make sure to sand in between coats for a flawless finish.