A Quaffle is a ball used in the wizarding game of Quidditch. It is approximately the size of a football. Twelve inches in diameter. It is a red, leather-covered ball used as the main object of play, and is the only one out of the three ball-types that is practically immobile.
There are two options here. The file named "Quaffle" is the full ball. The file named "Quaffle12" is 1/12 of the ball. So you'll need to print 12 and glue them all together.
When I made mine I went with the 1/12 option and spent m time on the cleanup. I'm not sure if this was the right choice.
MatterHackers Build PLA
I printed mine at 1/4 scale. 12 inches seemed excessive.