Bushings Replacement DIY for Rear Lower Control Arm / Swing arm

[Bmwe5320023.0]

My torch won't heat it enough to cut the bolt.
I wish I had oxy-acetylene torch.
I just used it to heat up the bolt and bushing enough so that the two would separate.
I kept heating up until I could turn the bolt inside the bushing. Once the bolt would turn, I was able to get it out.
My torch was not strong enough to cut the metal.
I think it can only go as high as 3000F, while oxy-ace heats up to 5000