To simplify production, which surface finish is recommended?

• A. Coarser
• B. Finer
• C. Rougher
• D. Smoother

Answer: (A)

Choosing a coarser surface finish speeds up production because rougher surfaces are quicker to produce and often require fewer finishing steps—no extra grinding, polishing, or fine sanding. This reduces cycle time, tooling wear, and processing cost, which is exactly what simplifies manufacturing. It’s important, though, to ensure the coarse finish still meets the part’s functional needs (fit, sealing, wear resistance, lubrication retention, etc.). When those requirements allow, a coarser finish is the practical choice to streamline the process.