Crazy Chinese smiths. Forge a large flange on the street
Best example of hammer and tongs I have seen. Not familiar with that expression? The Free Dictionary explains:
go at it hammer and tongs
To do something or performsometaskwithtremendousfervor,determination,energy, or forcefulness. An allusion to theforcewithwhich a blacksmithstrikesmetalusinghis or herhammerandtongs.Whatstarted as a minor disagreementhasescalatedinto a heatedargument,andthetwohavebeengoing at it hammerandtongseversince.