This is a tippe top design intended to have one nickel inserted in between the two parts to set the balance and give the top more momentum. It's designed specifically with a Canadian or American nickel in mind. I'm sure there are many other appropriately sized coins that would work, too.

I made this edit of ShawnGano's tippe top design. The central shaft has some supports, and extends less far down to give it more chance of remaining attached. The inserted nickel brings the center of balance back to the proper point - just below the center of the top's main curve.

I printed this with 60% infill. Since the weight is no longer coming from just the filament, this seemed to work just fine.

Enjoy!