I've been asked to cut these pipe rings off some playground equipment. The small pipe is 2 3/8" and the pipe rings are 2 7/8". There are four or five of these pipe rings and they are not welded into place, so I can slide/rotate them. Taking the rest of the playground fixture apart to remove the rings is not an option.

I have a portable oxy/act rig on my welding trailer which is one option. I also have a portable air compressor and an arcair K4000 that I recently set up for my TB302. So, those are my two choices.

Which would you use?
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