slightly off topic question:
I need similar control panel printing, for some rack mount synths I'm building, and wondered how accurate/precise is the geometry of most poster printers? Errors of more than 1mm would start to look crappy, methinks.
I was going to use inkjet printing onto lazertran decal transfer sheets.
The transparency of the lazertran product is a bonus for this stuff, too, as one can check hole marker alignment prior to drilling.