Weatherproofing metal
i've been decorating some metal mailboxes which have been outdoors for 1.5 years and are still looking good.

the process


i started by removing old paint/lacquer that was about to fall off. i did this by mounting a wire wheel brush on my drill and brushing the mailbox.
next, i cleaned the mailbox with white spirit followed by cleaning it in water and drying it.
i applied several layers of molotow spray paint.
i used molotow actrylic pens for drawing illustrations on top.
finally, i applied three layers of clear spray paint for outdoor use.