I have a need to create simple wiring diagrams labels for fixing to control boxes etc. The material may be familiar to some its 1.6mm thick Traffolite (Black, White, Black). Thing is i'm having trouble creating these in any other format than 'Sketching' onto 1.6mm extrusion, with the attendant result that its visible through other solid parts. Tried the 'Wrap' impractical needs new sketch for each symbol. Any help please (fairly new user)