Chapter 1 - Non-weapon Proficiencies
Metalworking Non-weapon Proficiency
Characters with this proficiency can work artistically in silver, copper, gold, tin, brass, and other soft metals. They can produce beautiful and useful common metal items.
A successful proficiency check results in a useful item of high quality. Failure may indicate that a craftsman has fashioned something ugly and unsuited for sale. More often (and for PCs), failure means that an item still looks pleasing, but is somehow flawed or fragile, and fails when put to the test. (For example, the pot leaks, a handle breaks, and so forth.)
Characters with an artistic ability proficiency that relates to metalworking gain a +1 bonus. While metalworking does allow characters to fashion iron or steel with some deftness, it does not grant them the ability to make effective weapons or armor. Metalworkers may attempt to repair non-magical armor that's made of metal, but a failed proficiency check results in the destruction of the armor. (Characters seeking armor repair should visit a metalworker only as a last resort; armorers are far better suited to the task.)