Master Refiner is a NPC.
Master Refiners (Sid Hawk, Eustace Hawk, John Hawk, and Jin Zhi) are located in the Ironmonger shop in each city.
Refine[edit | edit source]
According to Worker No.1, Master Refiners produce higher quality products. Whether this means they can produce excellent quality materials or that their refined materials have a lower chance of failing is unknown.