We already sent Tweakie the original .cdr files used to make the drawing. We think Tweakie's job is pretty amazing for a reverse engineer but in his end result a lot of the corners are cut off and the finer details are overlapping or missing. Hopefully he can figure out how to get it into Mach3.
Since we can print from any vector program, it's painless for us to use any file format. File open/print/go. It's a 10 second operation.
One cannot complain about the origin of the file and just need to work with what you have. We purchased this file off a website and ran it as it came with no modifications other than change the outside border so it is cut last and the paper isn't sucked into our exhaust fan.
In RetinaEngrave, we fit our own spline trajectory to it so we can have a million separate points and we will find a smooth path to connect them all. We don't need perfect simplified artwork.
If you need to do a lot of rework on a file, that's a huge disadvantage. Your stopwatch needs to start when you download the file