Spline segments to closed curve? HowTo?

Yes, I may do the offset with your dxf, but I get the same error message as on my sketch, with the difference , that your sketch finishes with a resulting good offset ???

I will search for the errors in mine

Right click on the point.

The first thing I did to your .cdr was select it, and on the properties bar, I tuned line width to “hairline” then removed the color using the pallet.

Yes that’s exactly what I did too.
No again :

  • Separated all curves to be able to export only the outline.
  • No Fill and Hairline
  • all points selected , reduced points
  • export only selected object to DXF
  • add DXF in Shap3d
    Same thing as usual, no offset possible

It drives me crazy.

here is my cdr and the exported DXF:
Lion_12-08_zip.zip (43.5 KB)