How are welds shown on isometric drawings?

How are welds shown on isometric drawings?

• A. Black dot or X
• B. Dashed line
• C. Dotted line
• D. Wavy line

Answer: (A)

In isometric drawings, welds are indicated with a small solid mark on the surface—usually a black dot where the weld is visible, and an X when the weld is on an edge or on the opposite face. This simple notation lets you see where welding occurs in a 3D view without cluttering the drawing with detailed weld beads. Dashed or dotted lines are used for hidden features or centerlines, and wavy lines serve other drafting purposes, so they aren’t used to mark welds in isometric views.

In isometric drawings, welds are indicated with a small solid mark on the surface—usually a black dot where the weld is visible, and an X when the weld is on an edge or on the opposite face. This simple notation lets you see where welding occurs in a 3D view without cluttering the drawing with detailed weld beads. Dashed or dotted lines are used for hidden features or centerlines, and wavy lines serve other drafting purposes, so they aren’t used to mark welds in isometric views.