I will be having a Fathers Day tool show at my store in June, I would like to use this opportunity to show off my laser, looking for ideas on how to market my service and create that "WOW" factor that everyone talks about. Have some of the laser buzz products in the store that have not created that buzz yet.I have the universal pls.360 with air assist. Is there any danger liability having this machine open to the public to view, so they can see it operating, exhausted properly of course.