Marble Coaster

Hello, this thing it's a parabolic coaster with spinning marbles.Requires 3 glass marbles or metal ball of 16mm. diameter.
It's than simple like you are here and your beer are there in a smooth table and say ; Hey , send me the beer , please...!
Well , honestly there is not made any crash test or something...
It's designed for 16mm. diameter marbles or metal ball. I attached the leg for easy fit to another diameters.
Prints in 3 hours upside down nicely without any support , like in the mode