Sling 4: Laser Etching the Throttle Cover Plate

I use a 3 Watt laser to etch away the top layer of paint from the throttle quadrant cover plate, which reveals the white paint layer underneath.
Artwork designed in Inkscape. The laser is controlled by GRBL firmware running on an Arduino controller. The SVG-to-Gcode software is LaserWeb, which talks to the Arduino via USB.