I also find it surprising how many people have no idea what a panel beater is.
Being in the same field, i really know what you mean.
"What do you do?"
"I'm a panel beater"
"A what?"
"I work with metal and fix accident damaged cars"
"Like a mechanic?"
"No"
So you paint them?"
"No"
"I dont get it?"
"I hit crashed cars with hammers"
"Oh... Sounds boring"
*facepalm*