He learned his trade from his father, Bob Rawson.
The younger Mr Rawson also left behind a 16-year-old daughter whom he "absolutely cherished" and his sister.
The death was tragic and had torn a hole through a happy family.
"You never, ever think you're going to bury your children," Mrs Rawson said.
She described her son as a quiet fellow who got along with everybody.
"He was so good to us, he was so thoughtful," Mrs Rawson said.
He would cut firewood for his parents and do anything they asked.
When he was younger, he went to Boy Scouts and used to give Mrs Rawson soap he had made, wrapped up with stars on it.
"He was very, very sick as a baby and we just about lost him.
"He went to Dunedin and he had tubes in his back draining his lungs.
"When he went to school and they had swimming, he'd strip off and people would say 'what's that big mark on your back?' and he told every one of them, 'that's where I was shot.'"
"I was shocked," Mrs Rawson said.
"I just have a laugh and think about that all the time."
Waitaki District Council road safety co-ordinator Jason Evered Ardgowan Rds said the speed limit in Ardgowan Rd was dropped to 60km in 2020 but the crash site was not an area he had known to be an issue.
It is the second fatal crash in Oamaru this year, after a 25-year-old Christchurch man was killed, when the car he was in crashed into a fence in Thames Highway, opposite Weaver St, on February 19.