You need to have at least a $4,000 welder and superb welding techniques to weld the aluminum; you can do a good job without the need for practice; you need to buy an expensive torch that is suitable for aluminum welding.

The most common wire used to weld aluminum is a softer standard wire. The other is harder (easier to feed the wire), which is mainly used in welding operations where hardness and strength are required.
Successfully welded aluminum

The fact is that a compact small MIG welder can also perform temporary aluminum welding operations after training, using the right welding equipment and performing the correct parameter settings. You will be able to use the MIG welder to complete the welding of various materials in your home, such as grills, backyard storage rooms, docks, and even decorative parts. Even home welding enthusiasts who often weld steel will feel that welding aluminum is a great challenge. The reason is: the aluminum wire is very soft and the wire feeding is quite difficult. In addition, the wire diameter and welder settings typically used for steel may not be suitable for welding aluminum