Football Piggy Bank

I couldn't print this so far, so the pictures are all rendered (I had some fun with the carbon fiber look ;) ). When you have an idear on how to improve the model please let me know. All the money should come out at the bottom easily. I made the hole at the bottom so big, that you are able with normal sized fingers to get inside.

I included the f3d file so you can modify it if you want. Be careful when you change parameters, because they are not properly working (i scaled it 10x later).

How to print:

I would recommend printing the football like this or in a simular orientation. Also use a small layer hight at the point with the highest curvature, like seen at the top of the picture (spherical objects are hard to print).