Mig Welding - Here comes the Boom part2

This welding project is building a boom arm that will hang a wire feeder for my millermatic 250 mig welder. In part 1, the boom was fabricated and now in Part 2 it is time to put together the post and the swivel assembly. I used a bit of stick welding, mig welding, and oxy acetylene cutting to get the job to this point. Looks like there will definitely be a part 3 which hopefully will show the post mounted to the floor