1, argon arc welding is commonly used. There are 4 series, 5 series and 6 series welding wires, which are sold in general hardware stores.
2. However, if welding thin aluminum parts, or dissimilar aluminum, and two different aluminum, it is best to use low-temperature aluminum covered electrode WE53. You can search online for "WE53 low-temperature aluminum covered electrode welding operation video for iodine welding" to understand the detailed operation video.