I could see curiosity getting the best of you on the first one, but why the other two?I poked these to see what would happen, dumb, yeah I know.
I hate to be the safety officer or nanny, but I guess I'd rather do the dowel rod repair than the coin, since I don't want metal being heated that close to the ember.
Yep! Scrap them and get MM Cobs, you will be MUCH better off...Those look like Chinese cobs.