oh my - OH MY!!! My son is a blacksmith and I used to have to haul him to all the blacksmith meetings. Yes they do have that chart for forge welding and other heats. I don't think there is a blacksmith alive that wouldn't want that quilt. I'm hoping the edges are centered to fit on the bed with out hanging over so he can read the words. Maybe it is a wall hanging? It is perfect for a blacksmith in any case. One night we were staying at a black smith conference and the evening sky looked about like that. I thought the sky look would make a cool quilt, too. I love it when the arts meet.