Material:  Acrylic
Method Used:  etch
Depth:  <.002
Laser Type:  20 Watt CW Fiber Laser
Focal Length Lens:  254mm
Power: 40%
Speed: 10 inches per second
Passes: 2
Cycle Time: 50.5 seconds

Samples were processed using a 20 watt CW fiber laser through a 254mm F-theta lens. To increase the contrast in the brail bars you may need to increase the amount of paint use in the colored area. (race track color).