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397 Posts
my opinion. ..
cut multiple rings of thin plywood.. you can cut out the middles to keep it light.
center ring is largest with each ring getting smaller towards the north and south poles.
you could use a 3 inch PVC pipe as the center to hold all the pieces together and double as a stand.
then, you can use foam or plastic sheets to 'skin' the sphere kind of like a beach ball.
you could glue/nail thin strips of wood or foam to support the skin.. (the green lines)
here's a quick sketch.
![Line Sphere Diagram Parallel]()
cut multiple rings of thin plywood.. you can cut out the middles to keep it light.
center ring is largest with each ring getting smaller towards the north and south poles.
you could use a 3 inch PVC pipe as the center to hold all the pieces together and double as a stand.
then, you can use foam or plastic sheets to 'skin' the sphere kind of like a beach ball.
you could glue/nail thin strips of wood or foam to support the skin.. (the green lines)
here's a quick sketch.
