Re: Paint not hardening??
Bareky is right. That's a lot of paint in a short period of time. You can not follow the timing published for automotive finishes with rattle can paint. The solvent evaporates out much, much more slowly than that used in commercial finishes. If it were me, I would give it at least a week before wet sanding, then 2 or more weeks after the final coats before I did anything with it. Honestly, though, I'm more than a little obsessive about these things.