been looking ways to attach hdpe together and from what I can understand, the best method apart from fasteners is welding. I've got no plastic welding equipment so I'll try to fiddle with what I have - my idea is to pass a small gauge wire in the ends to be welded, then press the ends together and connect the wires to a battery, the wire should get hot enough to melt/weld the ends in theory. Anyone tried something similar with some success? I'll give it a go tomorrow and see what happens