That's funny. I'm not disagreeing with you Mad Dart, but I've heard EXACTLY the opposite. The rationale being that by pushing into the weld you have better gas coverage. From my own experience, I've found it easier to see and control the weld puddle by pulling the gun.
I've also read on a couple of other welding websites that the push vs. pull argument is BS and you should use what ever you have to, as with tight spaces you will sometimes be forced to push and or be forced to pull. The reality is that you can get a solid structural weld with either technique.
Regards,
Joe Dokes
