I can't find how to mirror and bevel a bezier curve, if possible non-destructively, without converting to a mesh.
I just created a simple 2D bezier curve and filled it:
Then I applied a mirror modifier:
and I extruded/beveled the curve:
However, as you can see there is an ugly artifact on the part where the curve join. Any idea how to properly mirror a curve and extrude/bevel it?
I tried with the proposed method, it's a bit better (I did tried it before but I was missing the
clamp overlap option). Artifacts are not that strong, but still present, especially when angles are sharp. I tried to apply subdivision surface, but the result is even worse. Unchecking "loop slide" improves the result a bit, but still not fantastic. Seems that handling bevel correctly is a very hard problem.