Walter R. wrote:
I work with PVC irrigation pipes, small jobs at a time.

Every time I try to use a previously opened can of cement, it has
glued itself shut beyond redemption.

I am careful not to get cement on the rim of the can, but it takes
very little to permanently glue the can shut.

I am sure I am not the only one who has this problem. How do you guys
cope with it?

If your channel locks won't open it, I bet heating the lid with boiling water
would get it loose. Storing the can upside down might keep it from solidifying
at the lid. It works for paint.