9 yrs old? Are you F'IN serious? Sure and afterwards give him a smoke to light up & a beer. Fire up the lawn mower too and let him mess with that thing. 9 yr olds have no common sense for f--ks sakes. He's a kid, let him be a kid. Why do adults want their kids to become so responsible and grown up so fast? If it can cut wood or logs, it can cut your son!