Creating a sandblasted finish on bronze involves using high-pressure abrasive materials to etch the surface, resulting in a uniform, matte texture. Here are the most common techniques:

1. Abrasive Media Selection: Common abrasives include aluminum oxide, glass beads, or silicon carbide, each offering different textures. Fine grit produces a smoother finish, while coarse grit creates deeper etching.

2. Pressure Adjustment: Sandblasting machines are calibrated between 50-100 PSI for bronze, depending on the desired texture. Lower pressure ensures controlled material removal without damaging the metal.

3. Masking and Stenciling: Areas not intended for blasting are masked with tape or rubber coatings to preserve details. Stencils can create intricate patterns.

4. Uniform Blasting Technique: The nozzle is held at a consistent angle (typically 45-90 degrees) and distance (6-12 inches) to ensure even texture. Overlapping passes prevent streaking.

5. Post-Blasting Finishing: After blasting, bronze is cleaned with compressed air or water to remove residual abrasives. A protective wax or lacquer can be applied to prevent oxidation.

These techniques are widely used in sculpture, architectural elements, and decorative metalwork to achieve durable, aesthetically pleasing finishes.