Which finish symbol represents Machining?

Which finish symbol represents Machining?

• A. Machining
• B. Grinding
• C. Polishing
• D. Finishing

Answer: (A)

Finish symbols tell the shop what post-weld operation to perform on a surface. Machining indicates removing material to bring the surface to the final size and exact tolerances, often after welding to correct distortion and restore geometry. It’s used when the drawing requires precise dimensions that only machine tools can produce. Grinding and polishing change surface roughness or texture, while finishing covers other surface treatments; they don’t guarantee the controlled dimensions that machining provides. So the Machining finish symbol is the one that represents this operation.

Finish symbols tell the shop what post-weld operation to perform on a surface. Machining indicates removing material to bring the surface to the final size and exact tolerances, often after welding to correct distortion and restore geometry. It’s used when the drawing requires precise dimensions that only machine tools can produce. Grinding and polishing change surface roughness or texture, while finishing covers other surface treatments; they don’t guarantee the controlled dimensions that machining provides. So the Machining finish symbol is the one that represents this operation.