Creating a seamless finish in welded metal sculptures requires precision, patience, and the right techniques. Start by ensuring clean, well-fitted joints before welding to minimize gaps. Use TIG welding for its precision and clean beads, or MIG welding for thicker metals, ensuring consistent heat control. After welding, grind down the seams with progressively finer abrasives, starting with coarse grit and moving to fine sandpaper. For a polished look, buff the surface with a rotary tool and polishing compound. Finally, consider chemical patinas or clear coatings to protect and enhance the sculpture’s appearance. Mastering these steps will result in a flawless, professional finish.