I have wood turned a Death Star out of bamboo plywood. The build consists of making two segmented halves that seam together at the trench. Each half is made of 9 rings. Each ring has 13 segments. (13 seemed like an evil number). There is one extra ring to help the two halves overlap at the seam. The superlaser dish was turned separately. The hole in the Death Star and the profile of the dish were cut on the CNC router to allow to two to fit together.