I'd re-think this. 1. The cup is directly above the motor. It gets wet, you get zapped. 2. I believe the cup is a large doggie dish? It's thin and will tear up. You could epoxy 2 of them together, but it'd be way out of balance 3. Balancing at high speed with the center of gravity being that high? No thanks;)
I've seen vids of one like that that tore up. Person's lucky he's still alive.
The Vertex spinner is designed the way it is for a reason. Consider buying one.
_________________________
Currently using:
Claw Hammer Urethane
White Dot
Better swing, more accuracy, and more spares.
A 200 avg. before summer.