On the other hand ( and I speak as someopne who was lucky enough to be let loose on some quite exotic machinery at an early age) it's the only way he'll get it out of his system
My old man's words to me ( after I'd bent his Healey 3000- in the drive of all places!!) were,
" Son, you bend 'em- you mend 'em"
It was my summer vacation after my first year at University and I then spent the next eight weeks labouring in the local steelworks to pay the bill

G