QUOTE(windforfun @ Jun 3 2011, 04:37 PM)
Wait 45 days before you touch it. The paint that is.
That's a common misconception. Being a painter, I can tell you, you can sand and polish 24hrs after the car comes out fo the booth. Yes the paint is still curing, yes you have to be careful. But if you see a spot that the shop didn't quite buff out completely, or if they missed a speck of dirt you can absolutely polish that thing.
You have to wait 2 weeks to a month when it comes to waxing, or using as carwash with a wax compound in it. Waxing a freshly painted car without allowing for proper curing can trap the solvents in the clear, causing it to turn brittle and give it a white/yellowish color.
Best thing you can do to help speed up the curing process of the clear/singlestage, everyday (or as many days as you can) roll it outside and let it sit in the sun. do that for 2-3 weeks in the summer, and after that wax away!
But if the car needs buffing, buff it. Just make sure to ask the shop that painted it how many coats of clear they put on it. 2 is a minimum, 3 is most likely gonna be the answer if it's a high quality/expensive job. make sure you always have the buffing pad rotating OFF the edges of the panel, not ONTO the edgest to prevent burn through.
-Matt