I was searching for ways to stick HDPE (in the knowledge that, being polythene, it's pretty dificult) and got some hits on HDPE welding rods. That set me to wondering how easy it is to weld, my father used to weld PVC to make ducting and I know when I played at doing that (many, many, years ago) it wasn't too difficult.
So, how easy is it to weld HDPE? I.e. if I get suitable welding rod and a suitable heat gun will I be able to mend a couple of HDPE water butts which have splits in them? Further (and presumably more difficult) is it realistic to think one might be able to weld a length of HDPE pipe into the water butt and make the joint waterproof?
Any experience/comments most welcome.