Moving on with A to B pillar door sills. Biggest thing I had to deal with here is clearing the seat belt reel cover. I followed how it was done on the donor with two radius turns linked by a straight section.
The other side I just mirrored the 90° corner I have at the C pillar end on the outer edge, and followed the door pinch weld flange on the inner.
Next is to complete the door sill all the way out to the edge of the bodyline minus the seal depth. I thought to just come straight out to the full width of the B pillar following the piece I had just made. I did a straight fold and then used the shrinker/stretcher to make the curves follow the inner piece, but also the body profile vertically, keeping an even width out to it the depth of the seal that will sit in between.
But then while I was doing the dishes at night with the wife, I was worried that there was not enough door frame support in that corner later on when I build that. So I decided to build the rest of the door sill between the B and C pillars next, slimming down the inner section as much as possible against the seat reel pocket. This more than doubled the clearance for the later door frame in the corner.
I used the left over steel from the electrical cabinet that was 1.4mm/17ga joining it to the 1.2mm/18ga inner sill. The beauty of this is I was able to just fuse weld the two together without using filler wire, as you flow the thicker metal across to the thinner. So much easier and no grinding, just sanding, after planishing the weld.
I then did the same thing to the A to B pillar sill, reducing the depth of that corner which covers the seat belt reel. The door frame depth over that corner can now be over 25mm/1", much like stock on the donor.
The door sill will be left at this point so I can put the vertical body gauge any where along it and check the profile while building the doors. There is still a body swage piece that comes out from below the door and then curves back under all the way to the side of the chassis rail. That wont go in until after the chassis rails are fully welded in place. Everything built so far will also be fully welded together at that point.