At low volume, the priority is usually speed and flexibility. Small inefficiencies or slightly higher unit costs have limited impact, so over optimizing early often wastes time and money.

At medium volume, optimization starts to matter. Improvements in cycle time, material use, and process stability can noticeably reduce cost and risk, but changes must still stay balanced against development effort.

At high volume, optimization is critical. Even tiny inefficiencies are multiplied across thousands or millions of parts, making tooling, material selection, and process tuning essential for cost, quality, and reliability.

Choosing the right manufacturer matters more as product complexity increases. Simple products tolerate mistakes and are easier to correct, but complex products require experience, process control, and technical understanding. The right manufacturer helps prevent errors, manage tight tolerances, and protect quality, while the wrong one can turn small issues into costly failures.