Posted by dellus on Dec 31, 2024; 8:38pm
URL: https://forum.librecad.org/Imperial-units-and-line-width-tp5725925p5725934.html

I have opened that file.
If you zoom in very closely at one of the line ends you will see there is a thickness. I have measured this with the Measure tool and got 0.083. As this is in inches (your units) multiply it with 25.4 and you get 2.108, nearly exactly the set line width of 2.1mm.
The line width also reacts to a change. So everything is ok. The line only looks very thin in relation to the length.

The sample line is 90 inches long. Your paper format in current drawing preferences is Custom with 0.3255 x  
 0.46035 inches. ???
You said most of your drawings fit on Letter size and you prefer scale 1:1.
So the issue comes from your drawing setup. If you draw a shape that fits into letter format and set this properly, and in Print Preview set the scale to 1:1, everything should be allright.