Day 5 saw the boys putting the back of the cab together. Welding pieces securely in place on the truck. And though it may not look like much progress was made by the end of the workday, this is not a step to quickly work through, since the structural integrity of the truck is a priority.
I’ll also add that welding is time-consuming work, but you never realize it until you look at the clock, and all of a sudden it’s 4 pm when 20 minutes ago it was 12. Though I suppose between making good welds and needing to let the welder cool down every 15 minutes or so, the time adds up.