What a brilliant idea! 2 ply plastic for contrast with a magnetic back. The possibilities are endless. A flexible magnetic material used to create promotional magnets, repositionable nameplates, vehicle graphics, and more. This comes to us in 12" x 24" sheets and can be cut into custom shapes. HERE is a link to the color options. You do have to scroll down quite a ways
The answer here could be a long article but in general, a rotary engraving machine is driven by compressed air which pushes a diamond or carbide tip into…
