[QUOTE] Hypothetically, if you had a friend who had heard that the local council were considering placing a bottle bank close to his back garden and he wanted to weld the fucker shut one night. What equipment would you suggest this friend used?[/QUOTE] Angle grinder. Or an arc welder driven from the car battery. Seriously, you can arc weld from a 12V battery. More expensively, you can use a mobile welder - it's like a genset but has welding current outlets on it. Much more stealthy, though, is a simple oxy/acetylene Portapak, but it's a hassle getting one just for that.