Aluminum is widely used because it machines efficiently, offers a useful strength-to-weight ratio, and accepts many finishes. The right alloy depends on structural load, corrosion exposure, weldability, form, and whether anodized appearance or electrical performance matters.nnMilling, turning, EDM, and secondary cutting can be combined to produce detailed aluminum components. DFM review protects thin walls, reachable internal corners, and tolerances that affect the assembly.