As seen in my other videos with the post driver, I drove 2-7/8 pipe for corner posts. Some of them are slightly off from plumb. In order to bend them to plumb, i used a propane weed burner torch. I made a simple fire box to contain the flame help prevent starting a field fire. For extra safety, i sprayed down the surrounding area with water as extra precaution.
I simply used a metal bucket that I had. I cut the bottom out of the bucket with a grinder and also cut a hole in the bottom to insert the torch. It takes a few minutes to get the pipe red hot where it can easily be bent by hand to get it perfectly plumb. Note that you should not use a galvanized bucket due to potential for dangerous zinc fumes. I was outside and not up and close to the burner.