MiamiCuse wrote:

I have a section of PVC pipe I need to put a ball valve in. The pipe was
previously painted (I believe water based paint) and I need to clean that
paint off so I can apply PVC primer and glue. What is the best way to clean
the paint off? I tried sandpaper and that did not go very far,

Brake fluid eats paint, leaves most plastics alone, even styrofoam.
I used some to remove the paint from my Ford wheel covers made of an
ABS-lexan blend.