Those who have not yet acquired a welding machine (SA), I recommend you make it yourself on the basis of a failed induction motor. The cost is minimal, but the result… and development, which can be used for turning scrap stator in a good “svarochnik”, published a lot (see, for example, “modelist-Konstruktor” № 8’92, 11’95, 1’96, 3’96). I would be glad if someone useful to my practice-proven tips.