Recently I ran onto a picture of homemade small game arrowheads that were made out of Nails. No description other than what one's mind could imagine of how they may have been pounded down with a good size hammer and sharpened. So my question is can these be hardened with heat or will they melt easily? I pounded a nail down yesterday and shaped it into a somewhat of a ideal of an early cave man type arrowhead. Might look somewhat like what the very first arrowhead that was invented might have looked like! After getting it somewhat flattened enough to sharpen it was very flimsy. Also it took a lot of pounding with a 16 oz. hammer. I thought a good ideal maybe is to start flattening them and then drive 25 miles to town and lay them on the railroad track and let the train do the rest of the flattening. (Hopefully it wont derail the choo choo) Any pointers from the blacksmith?