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A curve bulging outward.
Also known as: Convex weld finish
The welding symbol requiring the finished weld face to be convex.
Requires the finished weld face to stand proud of the joint in a convex curve.
Contexts: Technical drawing
Convexity adds material without adding strength in a fillet, so specifying it is usually about appearance or about clearing an adjacent feature rather than about load.
Contexts: Technical drawing
A shallow arc bulging outward, drawn across the outer face of the weld symbol.