I need to solder to an aluminum tube for an electrical connection. I was hoping I could tin the Al and then latter solder a copper wire to it. I have tried most of the solders for Al with little succes. From what I have read Al will actually take tin/lead solder quite easily if you can clean and keep the oxide coating forming. I have a glove box that I may be able to do this in but I need to know what gas I should use.