Best I saw during my apprenticeship days in the 1980s was when we had some EE degree students on work placement. We worked in R&D and all (Multibus II) boards

Best I saw during my apprenticeship days in the 1980s was when we had some EE degree students on work placement. We worked in R&D and all (Multibus II) boards were hand-soldered and had to be visually inspected by a supervisor before testing. One chap presented his board for checking and, after a visual and touch inspection, our supervisor said that some of the joints were a bit 'pointy' and would need fixing. So off went the student to the fab area of the workshop, the board was put in a vice and I just stopped him as he approached the bench with a sandpaper-wrapped block of wood.