Hi to everyone,
This is my first post on the forum. I apologize if the question has already been asked.
I did a simple drawing with inkscape by connecting straigth and curved lines, drown with

and

tools respectively, connecting them pretty carefully and precisely. I set their width to be the same, nameliy1.3 pts, and they look good and uniform. But when I export my image in .pdf, the junctions look awful and the curved parts have a different width. What happens? How can I fix this issue?
Thank you,
Giacomo