Made from a single piece of solid sepele wood I call this piece "Primarily Painting". Color that sweeps across the face only paints in primary colors of red, blue, and green. The sweeping color follows parabolic motions that start and end at random locations. The primary colors mix with existing color to create wild color patterns. Pure primary colors are rarely seen. Color changes slowly and is not always noticeable.
I wanted accurate segment cuts but my mill was only large enough to handle one digit at a time. I used my CNC mill to make individual digits and two colon pieces before gluing them all together. Everything apart from the router patterns was handmade using traditional woodworking tools. CNC is not needed at all for a clock this large, but it helps. Quarter-inch resawn bookend planks created the large face from a single piece of sepele wood.
Clamps and wood strips held the router pattern firmly under the clock face. The router carved out each segment of every digit using a flushing bit riding against the router pattern.
The router pattern also served as a spacer for LEDs. I made a frame for the spacer and provided threaded inserts for mounting the LED plate. I filled each segment of the face with clear resin, then surfaced and sanded each side flat. I later attached the light diffuser and spacer assembly permanently to the back side of the face. I made a second frame around the back to thicken the face, then rounded the edges and applied the finish.
I had a lot of fun building this clock. I also added many new firmware routines now used in other projects. I find this piece mesmerizing as the color changes so slowly that I sometimes notice a new color palette before I notice that the colors are changing.