I know this is a vague question, but I seem to remember a Cleric prestige class that was very into crafting metalic items. They even became able to shape metals with their bare hands without the use of forges or tools at later levels... I can't find it anymore, can anyone point me in the right direction?
It was a class feature. They became able to use their hands as war hammers at something like level 8, and they could also shape virtually any metal as long as they could put their hands on on both sides. Not a metal door from 1 side, but if they could somehow touch both sides, they could shape it to virtually anything they wanted. They were proficient with any weapons or armor they crafted, but they didn't really get any special features for using weapons or armor otherwise...
As far as I can remember, it wasn't a 3rd party prestige class, but having not been able to find it anywhere it might be...