I am working on a 1942 Universal Carrier. It looks like this universal_carrier_mkii_1_of_9.jpguniversal_carrier_mkii_1_of_9.jpg
as you can see there are various white serial numbers, stars etc. which I am hoping to spray onto the carrier. I need to mask somehow these sections before spraying and am looking for advice. The base colour is an acrylic enamel and it will be somewhat fresh (24-48 hours) so I don't want to stick something very sticky onto it for fear that upon removal the enamel may want to pull off. I have considered vinyl sign material which would be ideal but the sign guy I go to suggests I don't for the potential during removal.
Has anyone done this sort of thing? I can't hand paint it, I could just use paper stencils and hold on with regular masking tape but I fear that the paint will run beneath the stencil. I also considered using this new frogger tape which I've used in my home for painting baseboards etc and just cutting the tape out in the design I want. Labour intensive but so is redoing the whole job.
Does anyone have any suggestions?