If you want to build a BIG sparkleball, I’ve got the video for you. This is the first any-cup sparkleball I’ve made that is perfectly round. I mean, perfectly round. The trick in Walter Calabrese’s video is — stay with me— that first you build 15 hexagons and 12 pentagons. Hexagons are made of 6 cups attached around a 7th. Pentagons are 5 cups stapled in the exact way below.
Then you fit them together in a certain way. Walter’s video shows you how. My recommendation is to make all the hexagons and pentagons first. Then attach them to each other with paperclips or clothespins, before you staple the entire ball. You start with a hexagram. Then you add 5 pentagrams to each side of it. Then hexagrams. Then pentagrams. Don’t freak. Walter’s video is pretty clear.
Be careful as you staple. Not too deep, about 1/4″ – 1/2″ from the rim. Also, do follow Walter’s instructions to mark pentagons as you add them, or you’ll get lost. I painted them, but you can mark them as he did or any other way. This helps you keep the pattern straight as you build.
For the lighting, I inserted a lamp socket into a champagne flute so it would sit in the bottom of the ball, because I wanted the cord at the bottom not the top. There are many other ways to do the lighting, including Walter’s. I also used a bracket under the ball for support and ran a single wire up through the ball to the top.
I highly recommend Walter’s method. It should work with any cup of any size if it’s similar in shape to the one above. I’m happy to answer any questions. Be patient, and have fun! (Oh, and the official name of the structure/shape is a “truncated icosahedron.”)