Here in Lower Middle Mule Town there is a scale of difficulty for jobs like "cold pressing" (*bending*) delicate Italian parts of unknown metallurgy:
1) Vice and a beer.
2) Vice, beer(s), hammer(s)
3) Vice, heat, hammers, friends, beers.
4) Vice, heat, hammers, moonshine, friends, beers, moonshine, cheaterbars, >step5:
5) Next morning: order new parts;
Empirical evidence prevails!