Achieving a polished, reflective surface on metal sculptures requires a combination of meticulous techniques and the right materials. Here are the most effective methods to create a mirror-like finish:

1. Sanding: Begin with coarse-grit sandpaper (80-120 grit) to remove imperfections, then progressively move to finer grits (up to 2000+). Wet sanding with lubricants like water or oil can enhance smoothness.

2. Buffing and Polishing: Use a buffing wheel with compounds like rouge or tripoli. Start with a coarse compound to remove scratches, then switch to finer compounds for a high shine.

3. Electropolishing: This electrochemical process removes surface layers, leaving a smooth, reflective finish. Ideal for stainless steel and other alloys.

4. Chemical Polishing: Acids or alkalis can dissolve microscopic irregularities. Always follow safety protocols and test on small areas first.

5. Lapping: For ultra-precise finishes, lapping with abrasive pastes on a flat surface ensures uniformity.

Each technique requires patience and precision, but the result—a flawless, reflective surface—is worth the effort. Choose the method best suited to your metal type and desired outcome.