Posted by dellus on Jan 11, 2024; 12:39pm
URL: https://forum.librecad.org/Dimension-text-blocked-out-tp5724081p5724102.html

PDF - viewers differ in how they handle line width 0.00mm. Some show it as fine hairline, some very faint, and some not at all. At some viewers you can make a setting how to show a hair line.
In LibreCAD 0.00mm is the setting for line width out of the box. Anything larger than that should show well in a print or pdf.
I see in your shown Drawing Preferences you have General Scale at 1 and Text Height at 1. This means the drawing is set to be printed at scale 1:1 (a large plan) and with a dimension text height of 1". Now if you view the resulting pdf in the pdf viewer or even print it from there with it set to fit to paper the line width will be scaled down accordingly on screen or paper. So even a properly set standard line width of 0.25 mm may appear too faint.