Bruce Yeany's Centrifuge demo toy

thingiverse

This is a straightforward puzzle to tackle. First, you will need to print the body, then add two balls or marbles into each cavity before placing a clear piece of transparent plastic on top. For more detailed instructions and solutions, check out this video: https://youtu.be/QKRQ2fAi_bQ. The concept and design for this device come from Brucy Yeany, whose YouTube channel can be found here: https://www.youtube.com/user/YeanyScience. Specifically, his video on this toy is available at https://www.youtube.com/watch?v=-eG_hnV91IA. To ensure a successful print, I recommend printing this object upside-down on the build plate. If you have an effective part cooling fan, support will not be necessary due to its presence. In the screw holes, there is some sacrificial bridging; drill it out before inserting the nuts. For the top, you can use polystyrene, polycarbonate, or acrylic, as well as other transparent plastics. The print time should be around 9-10 hours and require approximately 90-100g of filament. Two M4 nuts and M4x10 screws are also necessary for assembly.