I've found a lot of old bladed tools (scythes, axes) from the late 18th-early 19th century in my barn, as well as an early 19th century bayonet. Thing is, they're rather rusty, and the bayonet tip is bent slightly. Does anyone have any advice on how to remove the rust? And will it damage the blade to remove the patina as well? (I'm away from home at the moment, so unfortunately I can't get any pics for you guys until next week at the earliest)