I often spray doors flat to prevent sagging, but the garments hanger process will work, and you'll invest in swiveling hangers anywhere for affordable. When drilling the holes, the holes are drilled into the sting on the doorway that will never be noticed every time they're installed. One example is, http://archerwvuro.kylieblog.com/1759134/how-much-you-need-to-expect-you-ll-pay-for-a-good-paint-sprayer-for-kitchen-cabinets