Pro Tip: Anything "Blue" is not dimensioned which means it can be moved around. Anything "Black" is dimensioned which mean is has a size. Once the whole sketch is Black it is "Fully Dimensioned." This means it's "locked" into place.
Select a sketch or surface to make a sketch on and make a new sketch.
Name the sketch accordingly with a label "Export DXF".
Export: Right click on the sketch and export a DXF file.
Alternative method: Use the DXF exporting script here for exporting many named sketches.
Layout the DXF file in Adobe Illustrator or another vector graphics or CAD program in preparation for laser cutting.
Assign colors to paths for vector cutting (red stroke), vector scoring (blue stroke), and raster engraving (black fill). The color mapping will depend on the system used.