If you want a fun way to showcase your laser cutter, place names or logos on your barstools, etc. this can be a run way to put it to the test! I work at a school, and used this to assign placements to the 8th graders who run our tech booth for events.
Settings here really depend on what you want to put on your barstool. Depending on your logo, or whatever you decide to put there other than text. It's better to start with a lower power setting and enhance it if you need to, than to go too deep.
After you're done, you should clean the engraved area with white vinegar on a soft sponge. Remove all of the ‘burn’ runoff and anything left behind by the laser cutter. Then attach to your stool base and you're done!