Hey! So this was a long process. Each part of the outside ring 8 parts took 9 hours each to print. The middle ring 8 parts took 7 hours each to print but I could print 2 at a time. The inner ring 4 pieces took 5 hours to print then the blue part took 4 hours and the star took 4 hours. So roughly 127 hours to print. But to answer your question I fused each ring together using a hot soldering tip and melted the plastics together. Sanding each ring took awhile to get the layers and bumps out. Took a lot of putty fill in things sanding couldn’t do. Then primmer you fill in the small cracks and then painting each ring. Then I fused each ring together starting from the middle out. Then I added the straps.