yup thats a good cheap method , i used to do the same . However spraying a wood mod with clear coat , you are going to want to do one even coat and a airbrush is not going to be easy as it will require many passes to do one coat , better look at the following - a finishing spray gun top feed and...
no probs , once you have had a gander of all that info , the re curing comment that will jump out at you is " SAPO " that being said my two last zampleboxes have arrived within 23 days !! but i aint gonna start praising them for doing their job , just yet .