TBDuval

I normally let it go for about 24 hours just to make sure but it should be solid after a couple of hours.

I have seen it do just fine after about 5 minutes, but I usually wait about an hour. You have to remember we are using the plumbing for flow and it has very little psi in most cases on the plumbing.

I prefer a few hours, personally. And if possible, I glue a section together that can be taken outside to rinse garden hose water through first, and then glue in the final two connections. This allows me to remove excess toxins from the glue process.

Also depends on the type of cement you are using. The standard glue dries faster than the rain or shine. but the rain or shine is better to use when pipes and fittings are not necessarily dry. I usually keep both around.