I'm currently spraying some tinted nitro lacquer in my garage. In NJ right now it is really cold, so I have a space heater running and spraying with a respirator on. I plan to spray my last coat tonight and leave the guitar in the heated garage until tomorrow to dry. I don't want to ruin the lacquer I just sprayed taking the guitar from the warm-ish garage into my house (it's a detached garage) by carrying it through the cold. I recently made this mistake by taking a different guitar from warm into the cold and it instantly developed several crack lines where I'm assuming the finish quickly shrunk when the cold air hit it. My question is: can I loosely wrap the guitar in a soft blanket for the short trip so it doesn't get shocked by the cold? I plan on letting it hang in the garage for at least 12 hours after the last coat. Or should I wait longer before wrapping it? OR would it be better to just turn the space heater off and let the temperature in the garage slowly fall, and then once the garage is cool/cold, carry the guitar sans-blanket through the cold for a few seconds into the warm house?