Hi,
I guess that are already vector geometry inside the PDF which does not result in a circle, either based on the raster/resolution while printing ... some output jumped with the exported curve one pixel to the right or to the left, so the result is a list of arcs with different radius (different by the value of 1 pixel + or -).
To test that you might import the PDF into Illustrator and compare the geometry there, I guess AutoCAD is not repairing what is already not a circle in the PDF.
Or maybe zooming the PDF very close on your screen could show it?
But to make sure ... can you upload the PDF?
- alfred -
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Alfred NESWADBA
ISH-Solutions GmbH / Ingenieur Studio HOLLAUS
www.ish-solutions.at ...
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CDay 2026------------------------------------------------------------------------------------
(not an Autodesk consultant)