I watched the whole 9 min. Seapotato has a lathe that could do this. In a land where there is no 'online' order a new one.
Trust that the welds are solid and he got enough penetration on the sides of each weld into the shaft. Interesting
nonetheless, again clever fix to an othewise unrepairable situation.
'Rebuilding and repairing broken rear axle'-
BTW, I just pulled a couple of old SF rear axles apart and aside from not being able to remove and continue to drive, they
are by far more stout than my FF. Ironically they are only 'weaker' where they are reduced to match differential input spline.
I'm not saying they are better, just interesting to do a side by side. Lets face it, 99.999% of most people don't need
the FF advantage.