Which finish symbol indicates the requirement to machine the weld area?

Which finish symbol indicates the requirement to machine the weld area?

• A. M
• B. C
• C. G
• D. F

Answer: (A)

Finish symbols on a welding drawing tell you what post-weld operation to apply to the weld area. The symbol that represents a machined finish means the weld area must be machined after welding. Machining removes material to produce a true, flat, and controlled surface and to meet precise tolerances or mating requirements. It’s used when the weld buildup needs to be trimmed back or surfaces must be clean and dimensionally accurate for components to fit together properly. Other finish symbols point to different post-weld operations, so they don’t indicate machining.

Finish symbols on a welding drawing tell you what post-weld operation to apply to the weld area. The symbol that represents a machined finish means the weld area must be machined after welding. Machining removes material to produce a true, flat, and controlled surface and to meet precise tolerances or mating requirements. It’s used when the weld buildup needs to be trimmed back or surfaces must be clean and dimensionally accurate for components to fit together properly. Other finish symbols point to different post-weld operations, so they don’t indicate machining.