as far as morning star maces are concerned i cant say any more then what everyone else has said but if your talking about a flail i once saw someone use "strips" with spikes attached to form a ball...so basically take your flat stock, fold it over (about 3 inches or so) forgeweld each end, open up the center and round it and shape welded ends into spikes...and repeat im not sure how he attached them but an easy way would be to rivet them together and it cuts down on weight by a ton!