@bartamos - Many thanks for that reply. Very much appreciated. To be honest it gives me confidence/confirms my own thoughts on the process. I have been reading blogs/posts and watching videos I swear every day since about last February as I been making my way to this stage of the rebuild knowing the cab was going to be the toughest part for me especially. I got a piece of leftover scrap replacement floor plan material from a local body shop I have been practicing my welding on, especially butt welds. I have not however practiced grinding them down, dressing them and making them disappear!
I especially appreciate your point #7. I did not know that, and wouldn't intentionally try it but will definitely be on the look out for it now!
On point #10, what is the copper backing material? I have not seen that. I did see a this blog
here he smashed out a copper plumbing tee and used some vice grips to wedge it on the back side of his weld on a long flat butt joint to dissipate heat. That is the only one I have seen use that. Was wondering if that was what you meant or if you had an example?
fyi-
Based on this pic
here, assuming all replacement cab corners are the same, these look to be larger than I thought and may cover a lot more of what I need than I originally thought including the worst of the "pin holes" area on the lower back panel on the passenger side.
