How do you take apart abs pipes that were glued wrong?

You don't. You cut apart and start over.

How do you take apart abs pipes that were glued wrong?
Keepitsimples answer
You don't. You cut apart and start over. was bang on. It's more of a weld then a glue joint. The glue will melt the plastic until it forms one piece before it hardens. When that happens it's impossible to pull them apart. Regards, tom