Marble Challenger 1

thingiverse

To play, position a marble at the edge of the round indentation and attempt to navigate it into the pit within the center. You can use your hands or a ping pong paddle for assistance during gameplay. Upon inspection, I discovered that the initial depression is excessively deep at 1mm; in future iterations, I will replace it with a half-circle wall standing 2mm tall. Due to this design flaw, I have found success by placing the marble near the indentation and after numerous attempts, I've managed to get the ball within an inch of its target.