Jody, Thanks for continuing to make fun and educational welding videos. I especially appreciate you doing a series dedicated to Aluminum. I have lots of questions every time I weld aluminum but will just pick a few as the videos come out. Don't want to dump too much on you at once.
One area I think would like to understand better is on heat input. The difference between starting out slow or starting fast with aluminum and how it affects the rest of the weld. How welding with too low versus too high amperage affects the weld outcome. As well, how to choose the correct amperage and set up a weld on a large aluminum piece versus a small piece and the different heat affect amperage has on heat on different size parts. Another area is causes of aluminum welds cracking and signs to look for to help diagnose and fix cracking problems. Finally, what should a good arc start look like with aluminum and what is a good start amp setting. Arc starts with steel seem to pop right off the tip whereas aluminum seems to wander a bit before starting. I am not sure if I am starting at too low a setting for the material (usually 1/8"), too far away on start, or if my tungsten needs better prep. Will look forward to more videos on aluminum welding. Thanks again.