Can't solder anything to aluminum? I will show you how to do this with a conventional POS-61 solder and a soldering iron. In a minute. No miracles. No tricks. No tricky fluxes and solders. No burner. Only with a soldering iron. No sawdust and aspirin, other shamanism. It will hold up no worse than when soldering to copper parts. Breaking force in tens of kilograms.