Creating metal sculptures with brushed or textured finishes requires a blend of craftsmanship and technical skill. Here are the best techniques to achieve professional results:

1. Brushed Finish: Use abrasive pads or wire brushes in a unidirectional motion to create fine, consistent lines. For stainless steel or aluminum, start with coarse grit and gradually move to finer grits for a polished yet textured look.

2. Hammered Texture: Achieve a rustic, organic feel by using ball-peen hammers or specialized texturing tools. Strike the metal at varying angles to create depth and visual interest.

3. Acid Etching: Apply acid solutions to selectively corrode the surface, producing intricate patterns. Always use protective gear and neutralize the acid afterward.

4. Sandblasting: This technique uniformly textures the surface by blasting it with fine abrasive materials. Ideal for large sculptures, it creates a matte, non-reflective finish.

5. Chasing and Repoussé: These traditional methods involve hammering the metal from both sides to create raised or recessed designs, perfect for detailed textures.

For longevity, seal textured finishes with clear coatings or wax to prevent oxidation. Experiment with combinations of these techniques to develop a unique artistic signature.