See more pictures and details on my blog entry here.
Serve this up alongside some sweet or savory Fried Pi Pies for a fantastic Pi Day celebration!
Step 1: Calculations and Considerations
Calculate the volume of filling. Measure around the widest part of the sphere. This is the circumference. If you don't have a flexible measuring tape, wrap a piece of string around it, mark it, and measure that. Use this to calculate the volume of your sphere. This sphere calculator will calculate the volume for you. A cup of pudding is approximately 14.5 square inches. My 11" diameter mold will result in 22.45 square inches, about 1 1/2 cups filling so I made two cups of filling.
I had an amazing semi-circular candle shade that was almost a perfect sphere with little holes for light and oxygen to go through. However, I calculated the volume of this 22" diameter sphere and it was a staggering 180 cubic inches requiring about 12 cups filling. This is why I went with a smaller mold.