Hi,
Now that my CNC is successfully engraving aluminum and PCB's, I'm looking for a way to color-fill the bare aluminum as shown here:
Anodized/color-filled panels
For clear anodizing, I've found that you can oxidize the aluminum which turns the bare metal black (of course the anodizing is unaffected), which sort of looks like the first picture in the link. Johnson Plastics sells the oxidizing compound for aluminum and brass.
My question is, does anyone know what type of process is best for other colors of fill, such as white? Paint sticks, etc????