I've seen any number of restorations where somebody strips a car to a bare shell, media blasts it, welds it up then paints it. For some reason, when the shell is in it's final stages of paint, you see plenty of pictures where professional body shops have masked up all the window and door apertures, even though it's completly stripped and the whole thing, inside and out, is being painted.
Can anybody explain to me the reason this is done?
My brother used to be a paint tech and sometimes would do restos:
This is done to avoid spraying that will not be painted in detail at that very moment. Overspray requires another round of prepping. Its easier to mask areas and then paint as you progress than to paint the whole shell inside out.
Some cars also use a different color on the interiors and may also need some markings to be applied by hand under the paint to be period correct.
It all depends how long the paint stays open for so when dry spray goes over an area you just painted it will settle in to the wet paint so when your doing a full re spray you would want to use a slower activator for inside then masks off the inside and spray the outside and dependent on witch spray booth your using side draft both down draft booth for certain finishes and using slower activators to achieve a finish u don't have to sand and polish as much.
