Precisely dimensioned laser cut parts are wonderful to work with. By adjusting your geometry for the width of the laser cut you have full control over how tightly your parts fit together. By using this add-in with a small (or even negative) value for your kerf you can make loose fitting parts for a child's puzzle perhaps. By using an aggressive value (say 0.20 mm - or a value larger than your calculated/measured actual kerf) you can make parts that need to be gently pounded together for no-glue assembly. Then there is the middle ground where parts can be easily dry-fit and disassembled multiple times prior to gluing.
This add-in also supports the creation of multi-layered DXF files, splitting your perimeter and cutouts into their own layers.
Get all of this without modifying your geometry or tediously offsetting and deleting scores of lines and curves - let DXF for Laser do the hard work for you!
This tool is not the best tool for the job, however, it is often the easiest. For those cases where you are dealing with a non-manifold shape or simply require more control over the path generation the manufacturing workspace can be used to generate either a multilayer DXF or gcode toolpaths directly. See Lars' video to learn how https://www.youtube.com/watch?v=2M0pwqe-r1M.