Ball Bearing Spinning Top V1

My first attempt at making spinning tops. I had 10mm ball bearings around and modeled this spinning top around them. One ball bearing is used as the spinning tip to minimize friction. Additional ball bearings are used as weights to give the top more momentum.

There are two versions, 3 and 5 with either 3 or 5 ball bearings around the circumference. The top and bottom part are either held by a M3 screw or glue. What you need:

• 4 or 6 10mm ball bearings
• optional: M3x30mm screw and M3 square nut or super glue

The screw allowed me to easily tinker around and assemble and disassemble the tops while testing.

Before printing the main parts, it is necessary to print the test piece twice and check the fit. The pieces should meet tightly, no gap nor a loose ball bearing. If the ball bearing is too loose, increase xy compensation and print again until it fits. If there is a gap between the parts, use negative yx compensation until it fits.

For assembly, if using glue, you snap the ball bearing in the bottom piece, it clicks in place. Then add the 3 or 5 ball bearings to the bottom piece and apply a few drops of glue. Put the top part on top and press both halves together until glue sets.

Assembly with screw: Add the M3 square nut into the bottom piece (rectangular hole), then push the ball bearing into the bottom piece, it clicks in place. Then add the 3 or 5 ball bearings to the bottom piece and put the top piece on top. Use the M3x30mm screw inserted through the shaft to tighten both parts together.

I already have more ball bearings ordered and will come back with another version!