Ever seen a horse go lame from being trimmed too close? @wendyj24 is right about leaving that bit of sole, and I always leave about a thumb's width for safety. You can actually feel when the sole gets hard enough to stop, which takes the guesswork out.

Yeah those tiny gigs can be such a pain lol. Last time I did a cafe board logo job the guy wanted it to look "corporate but fun" and changed his mind like five times. Ended up paying me in coffee shop gift cards, which was kind of funny actually. Still not sure it was worth all the back and forth for a free latte.

On older diesels, glow plugs seize all the time, so what's the big deal?