[Fionnbharr (finn:-)]

I just free handed them and welded up the seam on the side, they aren' t too hard once you have done 10-100 of them... ;-) Welding them without blowing through the socket can be an issue but a little mig gun weld handled should fix that. I prefere to do them on the power hammer now, start with thicker material, finish with a thicker socket, and its easier to weld and stronger...