Laser engraving ink film / Vintage radio panel

Hello all!

I'm trying to replicate an old black radio-panel with white text on a piece of plywood. I originally thought I would engrave it with a CNC-mill and then colour-fill it – but I realized that the white paint would probably bleed into the grain of the plywood, and I don't what type of finish you would use to prevent it. Then I read about these films that you can laminate your piece with, laser-engrave – and your laser-path would be represented with a white imprint which would be visible once you remove the film. Does anyone have any experience with this kind of material?

Thanks in advance!

/Jolyon