Simple Ball Bearing Car

thingiverse

Here is a rewritten version of the text: The Simple Ball Bearing Car was designed, 3D printed, assembled and tested within one hour. This innovative project utilizes a single piece 3D printed chassis, four neodymium magnets (6.35mm in diameter by 1.6mm thick) used as axles, and four ball bearings (14.5mm or 9/16" diameter) used as wheels to create a simple to print and assemble car that rolls quite far on smooth surfaces. The project is an excellent choice for kids and grandkids to help print and assemble as their first "3D printed" experience. I 3D printed my chassis at .2mm layer height with 20% infill and no supports, which completed in around 25 minutes. Next, I pressed the four neodymium magnets into the magnet sockets using slip joint pliers. Finally, I connected one ball bearing to each of the four neodymium magnets and it was ready to roll! On a smooth wood floor, this model will coast 30 feet or more. Please use caution around younger kids and grandkids when handling the neodymium magnets and ball bearings, as they are small and easily separate from the chassis. For example, do not eat the car parts! The Simple Ball Bearing Car was designed using Autodesk Fusion 360 and sliced using Cura 4.1. It was printed in PLA on an Ultimaker 2+ Extended and an Ultimaker 3 Extended.