Another method…you could try taking a copy of the file into Photoshop and painting white where the the interior lines but up against the cut lines to create a clear gap (it’s just easier with a brush tool for most people) then take that one into Illustrator for a Centerline Trace on the paths that you want to actually cut. Will make it easier to select those, copy them to a new file, and overlay the original bitmap for the engrave.
4 Likes