Clown, 10 isnt too young to start welding.
I was welding before that (not that I have improved much since
Really, I probably havent
)
Anyways, if you want him to really try, even to like it, you have to make it easy. Like, if you dont have one already, get an auto-darkening helmet. When we got one, I thought I was in heaven. Havent used the old one since.
Good luck.