PDF sketch heavy lines

[JasonEdwards38]

I am making a 8 1/2" x 11 sketch from a larger format 36" x 24" sheet. The lines on the sketch PDF are very heavy, distorted so much it's illegible. (when I make a full size PDF it's fine) Any suggestions? Thanks.  LT2018

[pendean]

Please explain in more detail what this task is so we can follow along?
"...I am making a 8 1/2" x 11 sketch from a larger format 36" x 24" sheet..."

And what method do you use to generate "heavy lines"?

[JasonEdwards38]

CTB file is used for line weights. The issue is that the line weight is distorted when I make a PDF using a smaller sheet size that the original CAD dwg. is on.

[pendean]

Smaller sheet size means smaller output scale, so you will need to use a different/modified CTB to accommodate that smaller scale. Just like plotting to paper: one thick line weight suitable for a larger scale is just "smudgy and blobby" on smaller sheets.

BUT... in PDF there is never EVER a need to create smaller sheet sizes since the recipient can do that all day long in their own PDF viewer without your input ever. So perhaps that's a second option you can look at/explore instead. We do this latter in our offices, have done so for 20+years now, we don't treat PDF like paper prints anymore. Give that a shot.

[RSomppi]

Your explanation is unclear.

Are you printing from the same layout and changing the scale or is this a separate smaller layout using 1:1?

Share your .dwg and your problem .pdf for examination to get a direct solution.

[jtohill]

TWO THINGS THAT YOU CAN DO.

1. Plot the file as a 24x36 then when you plot that file it will reduce the line weight proportionally.
2. if you plot the larger to get an 8.5x11 pdf fill the box scale linework.

Chose the first option for best results.