How to make this lines as smooth curved line?

SketchUp Pro
1

This is scan by template machine and the lines connected each other by a short straight lines.
Does anyone who knows how to make this line as smoother curved line as natural?
please help me !!!

Arch%20Benchtop
Arch%20Benchtop1844×1010 4.71 KB

Arch Benchtop.skp (102.3 KB)

2

Curvizard plugin. If you plan to make a face with this you may want to first be sure it’s coplanar. I would do that with Vertex tools but if you don’t have that, someone may be able to explain another way.

3

In SketchUp, you can use the Fredo6: Bezier Spline v2.1a plugin:

spline-03
spline-031000×600 1.69 MB

Arch Benchtop8.skp (25.7 KB)

For a more accurate drawing, you can use DraftSight (CAD).
You only need the following commands:

  • spline
  • l - line
  • a - arc
  • tr - trim
    plus ESnaps on / off

spline-02
spline-021000×600 3.01 MB

4

Draw over it with the Fredo Catmull spline tool.