I drew a 2D sketch and I have some lines that appear in bold black and some in light black. When I build with Mechanically Welded I have some problems with adjusting parts. Wouldn't this initial problem of line color differences be the cause of my part adjustment problems?
In fact it's nothing but a small graphical bug. I have it too sometimes but it doesn't change anything in the functionality of the sketch and I can't explain it....
To put all the lines with the same thickness, In the menu, after selecting all the lines, go to "Line Format" then "Line Thickness" and put a desired thickness; All the lines will then be identical.
I don't know, it happens to me too sometimes and yet I don't change anything about the parameters of the lines and I think that for you it must be the same. .