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I think it was on this video
and in the comments there is an obsession about 'the right torque'. (He is fitting a carbon crank, even though that isn't in the title).
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Unless that crank have a lesser torque than the usual 40-50nm it's very hard to go over that with decent sized tools unless you have baboon arms. Probably won't go anywhere close with home mechanic tools.
I have fitted loads with or without and it always comes to pull as hard as it goes without doing silly stuff like using breaker bars, never managed to break one.
Who said that? Crank it hard with a big tool is the right way