Newtons Gravity puzzle

Looking through Instructables, I happened across this (https://www.instructables.com/id/How-to-Make-a-Newtons-Gravity-Puzzle/ by tomatoskins), and thought "Gee, that would be doable in plastic." Ten minutes in TinkerCAD, and here it is.

Object - Remove the center piece without tools. You must keep the outer ring flat on a tabletop.

It should probably be called Bernoulli's Principle Puzzle (nudge, nudge, wink, wink). Past that, I'll let you figure out how to solve it. Or, you could visi