I took out one of the 2 screws that holds the base to the main mirror body(not the base to door screws, the 2 on the inside of the base that hold it together) and found a piece of all thread the same size to thread into the mirror then basically made a big hook/handle to hold the mirror while spraying and hang to dry, I was always under impression that the mirrors got painted off the car so that's what I did but I am not 100%sure. also if you do it that way make sure you get the right size all tread for each mirror, I used after market mirrors and each mirror had different size threads