Con quay hai tầng (Two-Stage Spinning Top)

If two spinning tops collide, both usually lose a lot of speed on impact. I wanted to solve that problem — so this top has two decoupled stages connected through a bearing. Even if the outer shell takes a hit, the center keeps spinning at speed, which is what gives the top its stability and keeps it upright.

Launcher compatibility
This top is designed to work with the official contest launcher from stlDenise — check out the original here: 3D Printed Spinning Battle Tops

Print settings

All parts except the center (Prusament PLA, standard settings):

• 0.2mm layer height

• 15% infill

• 2 walls

• No supports needed

Center piece:

• 0.2mm layer height

• 50% infill (concentric)

• 9 walls

• No supports needed

The center is printed heavier and denser on purpose — more mass means more angular momentum, so it keeps spinning longer. The extra walls combined with concentric infill keep that weight as evenly distributed as possible around the center, which matters for spin stability.

Assembly:

Bearing**:** You can use a standard 6001 bearing, or print your own bearing. If you go with the printed version, a drop of lubricant on it noticeably improves how freely it spins.

1. Screw the blade piece onto the bottom part.

2. Press the bearing into the bottom part.

3. Push the center piece onto the bearing.

4. Insert the tip into the bottom part.

If you run into any tolerance issues, let me know in the comments and I'll do my best to adjust them.

Good spinning. I hope you'll like it :)

24.06.2026 Update

Designed an improved tip that adds extra stability and makes the two-stage spinning effect more visible. Assembly hasn't changed — you can see the correct print orientation in the photos.