Back when I worked at a Ford plant, doing a lot of spot welding, the tips on the spot welders would wear down a little over time, so each spot welder ended up having a very slightly different diameter. I addition, how long you kept the spot welder going would lead to a slightly larger or smaller spot. Of course, now days robots are doing all of that, so I imagine there is much less variability.
Tim
I am currently digging back in to a 1953 3800 (one ton) with a nine foot bed. I've owned it since 1979, and drove it until 1982 (or so). My wife got me involved in restoring it back in 2002, got the body removed and the frame redone, then things came up. Now I am retired and starting again. If anyone is interested I have photos on Imagur (
https://timwhiteblues.imgur.com/ ). I live way back in the woods in the Ozarks on 40 acres at the end of a 2 1/2 mile private road.
Tim
