Raimey,
The term "fegen" means to sweep or clean, so that would fit your idea that they offered sword cleaning/sharpening services. This skill is very much like the gunmaking skill of polishing(polieren). An engraver would, in addition to engraving guns, make the stamps used for marking various products including guns. Stamps are/were used for numbers, letters, logos, touch marks, proof marks, etc. They could also make the "plates" for different styles of printing ( art prints, money, advertising, etc), or molds for decorative casting, and stampings like pewter plates. Like other skills, many specialized in certain types of work, but need might require they take in other work. With modern equipment, there is no doubt that much of this work is automated now. Mike
