Here’s a test file and the resulting pdf’s:printtestDPI.zip (18.8 KB)
I made a line with printwidth of 1 inch and set the pdf printer to different DPI’s
The PDF printer is PDFCreator I did not test any other pdf printers yet.
The preview of the print width is always correct
However in the PDF, at 300DPI and above the thickness of the red line is too small.
the thickness of the line goes from 25.4mm (1 inch) to 3.725mm
At this point I thought to test printing to an image file (the build in one)
Than all goes well up until 600 DPI when the red line starts to loose parts of the shape:
Still I wanted to see if it was not the printer, so I installed Bullzip PDF printer and that one as well printed the thin lines at 300DPI and up. However it is also based on Ghostscript so I went to look for a PDF printer other than a ghostscript based one.
PrimoPDF had the same issue.
I leave this for now before I start checking on amnyh other printers and the issue is at Rhino’s end.
Let me know if you need more info.
An unrelated issue I found is that with PrintDisplay set to ON.
When selecting a line with thickness, the size of that line when select-highlighted gets thicker (sometimes thinner):
Same line thickness one selected: