Why SOLIDWORKS Weldment Structure Members Won't Create from Sketch Lines
You have a sketch. You activate Insert > Weldments > Structural Member. You select the sketch lines. SOLIDWORKS either throws an error, silently omits some lines from the resulting bodies, or lets you finish — and the solid bodies pass through each other at every joint without trimming. None of these outcomes produces a clear error message that names the actual cause. This post covers every root cause and the diagnostic sequence to isolate which one is killing your structural members. ...