I have a line drawing done in a CAD package. Lots of thin coloured lines. When these are printed they almost disappear. Now in a CAD package I can adjust "pen assignments" and have certain colours thicker than others.
But I want to send this out to be printed by anybody, e.g. as a PDF or word file etc.
Problem is they come out barely visible. In the past I just blurred the whole picture about 5 times, and then sharpened it and adjusted contrast (in photoshop). This beefed up the lines well. Is there a better way of doing this? in the past my drawings were basic, this is more intricate.