About print line width not fine in technical mode?

Why I can’t to print the fine line width in the technical mode same as shade mode? And why the hidden line of circle is so thick?

Technical.ini (11.5 KB) test3.3dm (2.4 MB) test3.pdf (1.6 MB)

Rhino 6 SR14

Anyone have a any idea to solve it?

Hi
Sorry, no.
Technical display is an OpenGL display trick that is only intended for a working display mode. It isn’t smart enough to have printed line width control.

To get control of the line printing, you need actual curves.

You could use the Make2D command to create flat 2D lines, Then assign a Hidden pattern to the lines on the Hidden layer Make2D creates.