I was experimenting with filing up laser engraving with powder coat and running the laser at a lower power to set the paint. Have to do a bunch of optimization to find the sweet spot for the powder to melt but it does work quite well. Here are a few test pieces I made using this method.
I started with a 1/8 piece of solid wood (most probably maple or oak or ash may be). Stain the top with black oil stain. The black gives the solid black borders. Put a masking tape on it so that the fine powder coating dusts don’t settle on the stain. Then kept doing one color of engraving followed by powder filling at a time. I mask off the parts those are done between the colors just to be safe. After all the layers are done take off all masking tapes. after this the parts were clear coated with some poly (anything that will stick to wood and plastic will work)
I got some powder coat paint from @CLeininger but unfortunately they were harborfreight paints and I could never get them to work. i.e. the color was too faded after one coat. That forced my hand to buy some good powder coat paint from https://thepowdercoatstore.com . That’s what I used in making these.
I think @valerie can use this technique as, I saw she had video game themed laser etched products at the maker market. This can be a good/fast way to add some colors to them. Also this method works best with images with solid colors separated from each other.
PS - Some of the color inconsistency are because my piece was a bit wrapped and I don’t have any hold downs in my laser cutter.