I have been reading about various people's idea's of the different welding styles & equiptment.
My suggestion is before you even start go to your local training estabilshment, & learn about all the various bits pieces & have a go . By the time you have purchased your equiptment etc etc the cost will be a lot more than just buying a welder . Welding hoods flux & rods, gas etc etc all the different rods for what ever you are welding etc etc. Then don't forget to be able to weld properly it is a process you have to be at all the time. When your are flying is not the time to wonder if your welding will hold together. It may be better to pay a few extra dollars & have it done profesionally & you will have peice of mind. Just my penny worth . Fly safe. Robin NZ.