Paint is Sticky.

[u/Caloumi_Cheese]

I bought some Rust Oleum flat black spray paint and for some reason it won't dry completely. I tried it on a couple test pieces of plastic to see if it works and it worked perfectly just the way I want it to, drying in about 20 minutes. But the moment I used it on my actual project, it just makes everything sticky and doesn't seem to dry. I sprayed it yesterday and it's still sticky. even when I tried to make a really light coat, it's sticky. On one of the test pieces of plastic I didn't even wait for the coats to dry in between and it still worked perfectly but now it's not. I'm using the same primer base coat so I don't know what else could affect it. Does anyone know if I can change anything to make it work?