About this 3D model

This is a dexterity puzzle, with a pretty obvious objective. Get the 3 ball bearings to the center ring. All rings are placed into slots in the base, and glued if necassary. Once assembled, the balls will not fall out of the puzzle, even when upside-down. The design at 100% uses 3/8" ball bearings. (https://www.amazon.com/gp/product/B007B2AG7W/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1)