Thanks man, yeah, they are fun to make and fun to break! Need a welder, cutting tools (good tin snips, or angle grinder), hammer, hand drill, imagination. Other things nice to have but not necessary tools are a bead roller, pan bender, pipe bender, drill press. Most mild sheet metal can be bent in a vice, over bench edges and around pipes though. These are only 0.8mm to 1mm thick sheet metal.