Yep, I'd say so.
I had my introduction to car panel prep under the tutelage of a tradie panel beater, who was a partner in the car repair business next door to our family OPE shop.
My first car - EH Holden 179ci Special; minor bingles resulted in crunched front guards - and they had extensive rust anyway; impecunious tertiary student me couldn't afford either comp insurance [had third party property, though] or pro repairs, even as a 'cashie job'.
Picked up a pair of very good SH guards for cheap from a local cockie, who had a 'car graveyard' on his farm.
Then I had to prep them by hand, with periodic inspections by the panelbeater; sanding back with different grits of wet and dry abrasive paper, with a cork block for backing.
I learned a lot from that job!
