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Zee, I really don’t think you have anything to worry about. Anyone who is operating a lathe in a conscientious manner will disengage the power feed just before it touches the indicator stem and will hand feed to their set point. I really couldn’t image even a half assed machinist power feeding alway to the stop or forgetting to disengage . Guess I just pay way too much attention to what I’m doing.
If you have old silver solder, make sure it is cadmium free! Some of the older stuff had it, nasty for health.