Almost the luckiest escape. (method I used for removing broken long series drill)

[bruce.desertrat]

So it doesn't just happen on YouTube Videos, or people messing around with old equipment. That particular system was where I developed the notion that engineers needed five years experience as a mechanic, and five more years experience as a machinist before they're allowed to design things for sale to the public or Government.

Or it's just the person who produced the manual was not competent.

I'm reminded of the part in "Zen and the Art of Motorcycle Maintenance", where the author was talking about his freelance job doing technical writing, when he was hired to write an instruction manual for a lawnmower, and the higher-ups at the company decided to pair him with a line worker who assembled the things to assist. The line foreman promptly assigned his worst man to the task, mainly to get him off the assembly line where all he did was screw things up.

One of the only things I remember from that book...must have read it 45 years ago or more...