Questions about AC balance, AC frequency, tungsten electrodes, shielding gases, techniques for feeding wire, how to keep a tight arc without dipping in the puddle, and a lot more.
While I figure out the best way to answer as many questions as possible, I have to start by answering just a few of those questions about how to tig weld aluminum.
TIg welding box cutter blades can be very good practice because it makes you get used to focusing your eyes on a very small puddle, you have to get used to using a very small filler wire, and you also see how beneficial it is to use aluminum backing on thin metal.
Fabricating a stainless steel part and talking about maintaining the corrosion resistance of stainless steel. Outside Corner joints using Aluminum angle backing