[Zedn]

Im no expert, but can achieve a reasonable weld with mig on Al.

You need to move fast and have the wire feed super fast. Al heats up really quickly (hence why it is used as a heat sink). You will find it working perfectly and then all of a sudden you blow through. Depending on the thickness i do about 12inch lengths.

You also need to push the weld and keep it at a bit more distance then you would with mild. This is important and may be your problem that you are holding the tip too close. You are trying to achieve a spray transfer rather than the conventional weld pool.

It shouldnt be too hard, i tought myself in a couple of hours just messing around with different settings.