Spline Curve rough when exporting to PDF

[knut.c.bunge]

Inventor Version: 2021

I have a problem, where when I try to export a drawing to PDF the spline curves I draw look bad (See attachment).

Does anyone know a fix for thix?  On the left its the PDF on the right is the drawing in Inventor.

[SharkDesign]

Was going to suggest changing the resolution, but doubt it will fix that.

[knut.c.bunge]

Already tried. But thanks for reply.

[johnsonshiue]

Hi Knut,

If possible, please share the Inventor files (idw/dwg, ipt, and iam). I would like to take a look at the behavior and understand it better.

Many thanks!

[knut.c.bunge]

I have attached a set of files showing the problem.

Thanks in advance.

[johnsonshiue]

Hi Knute,

Many thanks for sharing the files! I can reproduce it now. It looks like the sketch spline is interpolated using very loose tolerance to boost performance. I need to work with the project team and see what we can do about it.

Thanks again!

[michael_marx]

Hi Johnson,

problem still exists in 2025.1

Is something on the roadmap to improve this behaviour?

thanks

Michael

[johnsonshiue]

Hi Michael,

Unfortunately, I am not aware of a good solution. The issue here is that the better spline export quality would come at the expense of the file size and the capacity.

Many thanks!

[j.muehl]

Same problem here