New answers tagged laser-cutting
If each line is truly on top of each other and not overlapping at all, you should be able to select them all in Illustrator then in the menu bar go Object> Compound Path> Make (⌘+8 or CMD+8). Hopefully this will transfer the shape over to be read as a single shape in lasercut.
If the final county lines are right on top of each other, you can use direct select by clicking and delete sections that over lap. To speed things up, cut one county line (selection tool), and drag a marquee over offending lines with the direct selection tool, and delete, Then paste in place (cmd+shift+v) the original overlapping county. If you're worried ...
Top 50 recent answers are included