Define design for manufacturability (DFM).

• A. Consciously trying to design parts for maximum performance regardless of cost
• B. Consciously trying to design parts that can be manufactured for the lowest cost while meeting the required design intent and safety factors
• C. Designing parts to require specialized manufacturing methods
• D. Focusing solely on tolerances.

Answer: (B)

Design for manufacturability means choosing design approaches with manufacturing in mind from the start, aiming to produce the part at the lowest cost while still meeting the required function and safety requirements. It involves simplifying features, using common materials and processes, avoiding hard-to-machine geometries, and setting tolerances that are good enough to meet performance without driving up cost. By prioritizing ease of manufacture alongside the intended performance, you reduce production complexity, scrap, and lead times.

That’s why the best description is the one that emphasizes designing parts so they can be produced cheaply and reliably while still satisfying what the part is supposed to do and stay within safety margins. The other options miss this balance: maximum performance at any cost ignores manufacturability; requiring specialized methods adds cost and complexity; and focusing only on tolerances neglects broader manufacturability considerations like process choice and part geometry.