
How do I get rid of doubled up lines?
We use Illustrator to send files to a laser for cutting and etching. If there are multiple lines overlapping, the laser will see them all and cut them again... and again.
I sometimes I Group everything together, use Outline Pathfinder, then replace my Stroke Color and Line Weight, and then Ungroup. That creates dozens of individual parts, but it will only have 1 line.
When I use anything resembling Grid creation via Path -> Split Into Grid or Repeat -> Grid, once Expanded (etc) I can get dozens of squares, but Outline Pathfinder won't fully break and merge pieces.
In the image, if you can see, the areas of darker lines are where there are multiple lines on top of each other. On the right is a grid that I created with a 1" square that I Alt-copied. Outline Pathfinder worked on it. But on the left was a grid that was created via Repeat Grid. It was expanded, but after Outline, I got a mess of different pieces.