In 7th grade wood shop in the early 90s I built this design into a wood box we had to make. I used a drill press with a plunge ball router bit, and set up the design to start about an inch in after the joins. The design looked great, box used 3/4 inch plywood, and was about 24” x 14” x 14”. My shop teacher hated it, said it wasn’t art class that it wouldn’t be as sturdy. Anyway long story short, when I was about 4 years older someone sat on it and that was that. So yeah, was cool... wasn’t as sturdy.