Building a '33-34 Ford chassis from the ground up

Nifty page on how this was done over at Custom Classic Trucks. Lots of good photos and documentation of the mig welding processes used to build this truck. A snippet (and I'm not including much since the original article is sensational and you owe yourself the time to go read it.):

After removing the center crossmember from the crossmember jig, Herb tack-welded and finish-welded the center crossmember into the framerails. Since the frame jig is a rotisserie, it can be positioned at any angle, enabling SAC's technicians to produce complete, uniform welds.