"You usually only have five to 10 minutes max to do the deal and cram it all in," he said.
That's working at a pace of roughly 15 seconds per letter, always with at least one TV camera looking on and occasionally, with Royal & Ancient chief executive Peter Dawson peering over his shoulder.
"The size of the name can be a problem," he said. "I remember father having a bit of trouble not trouble, he never had any trouble but it was a push to get Severiano Ballesteros done. That's a lot to go on there."
Harvey served a seven-year, on-and-off apprenticeship to his father, Alex, while carving out a modest career on the European Tour in between. He won exactly one tournament, the Kenyan Open in 1985, and qualified for the British Open in 1979, the same year Ballesteros won. Harvey was almost reluctant to admit he dared imagine his father engraving his name on the claret jug that year.
"Until my first lost ball," Harvey said.
He wound up missing the cut. With his father's health slipping, Harvey took over the engraving duties at the Open full-time in 2004. He broke the ice with Todd Hamilton and has had both Tiger Woods and Padraig Harrington twice. He thinks he was lucky that Harrington ("17 letters, I know that by heart") won in back-to-back years.
Harvey wears a jeweler's eyepiece and works with five different edged gravers wood-handled tools that resemble small screwdrivers including one that belong to his father. The skills required have changed little through the centuries and not at all since the Harveys, who did a variety of jobs for the R&A down the years, were asked to begin engraving the claret jug on-site in 1968.
The impetus came when 1967 Open champion Roberto diVicenzo returned the trophy that year without having his name engraved. Previously, that was the responsibility of the winner.
Harvey admits he does feel some pressure when he must do his job.
"You do feel a bit, especially when Peter is standing behind you," he said. "There used to be one cameraman, nowadays seems to be two. But if you concentrate, you're fine. What I did find one time, we had a monitor beside me and I could hear (BBC announcer) Peter Alliss commentating (on the engraving), and that caught my attention. I said, 'Well, we're not going to have that in there anymore."