Chop cup and ball

This is a classic chop cup.  Its shot glass sized, and comes with a ball.  

**IMPORTANT**

You need to pause the printing just before the hole in the bottom gets covered and glue in a 10x2mm neodinium magnet.  Make sure you give the glue time to cure, or it will get stuck to your print head when you resume printing.   The pause for me was at about layer 26.