Ball bearing 3 minute spindle

thingiverse

Here's the Spun Text: This is a ball bearing spindle, designed by the ingenious minds at http://www.thingiverse.com/thing:646839 - thanks for the inspiration! To make assembly easier, I modified the center hub, allowing you to adjust the fit of the bearing to your liking. All you'll need are 25 steel balls measuring 1 1/4 inches in diameter, which will be used as follows: 12 for the bearing, 12 for the flywheel, and one at the end of the center rod as a sturdy anchor point. Additionally, three small wood screws are required to secure the bearing assembly. To assemble the bearing, press-fit 12 balls into the outside holes on the flywheel, then add another ball to the end hole on the center rod. Next, insert the center rod into the flywheel's central hole and attach it to the bearing assembly. For optimal spinning results, wrap a cord around the thin part of the center rod, securing it firmly to the outer bearing. Then, quickly pull the cord to initiate spin - I achieved a remarkable 3 minutes and 20 seconds, and I'm confident you'll surpass that time! Printer Settings: Printer Brand: RepRap Printer Model: Aluminum Prusa i3 Rafts: Yes Supports: No Resolution: .1 Infill: 100% Notes: To maintain balance, I opted for a 100% infill setting.