[Endless Rolling] Möbius Ball Fidget Toy V1.2 No AMS Required

Some大佬 have reported issues with the top layer walls, this has now been fixed and re-uploaded.

Update: V1.2 version: 0208 optimized version, adjusted the gap between the hemisphere positioning pins for easier installation. The two hemispheres are now variable layer heights, reducing the top layer lines, and resulting in better printing effects.

Suggestion: When test-fitting the rotating shaft, if the rubber band is too loose, it is recommended to use two 2cm rubber bands. For longer rubber bands, it is recommended to double them up to ensure sufficient pulling force on the rotating shaft, so that the two hemispheres can be more tightly connected after assembly.

Update: V1.1 version: 0203 optimized version, modified the model's top layer wall parameters and lengthened the positioning pins to prevent the two hemispheres from becoming loose.

[Endless Rolling] Möbius Ball V1.2 Fidget Toy, No AMS Required, PLA No Supports Needed

I. Endless Rolling. The small ball rotates endlessly within the track, serving as both a toy and an educational tool for physics.

II. Super Stress Relief. Adults can also play with it during downtime. Watching the small ball roll at your fingertips is incredibly relaxing.

III. Three Track Configurations, as shown below. You can rotate the hemispheres to change the tracks. Multiple variations make it even more fun.

[Assembly Steps]

This product is printed in multiple colors and can be perfectly printed without AMS. It only requires a few simple steps to assemble, making assembly very easy.

1. Assemble the rotating shaft. Insert two rubber bands of approximately 2cm diameter through the small holes in the rotating shaft and secure them at the end clips. You can use a paperclip to help thread the rubber bands, simply bending one end of the paperclip into a small hook. If your rubber bands are too long, it is recommended to double them up to ensure that the pulling force on the rotating shaft is strong enough for the two hemispheres to connect tightly after assembly. Give it a strong pull to ensure that the half-shaft has a 5mm movement range.

2. Install the cylindrical limit pins into the holes on either hemisphere plane. Symmetrically install two pins. If it feels loose during play, you can install more limit pins. You can also not fully install the limit pins, leaving some space for additional limiting.

3. Rolling Ball. A small pillar can be used to help secure it; use glue to bond. Ensure the ball is as round as possible to avoid jamming during play. To ensure sufficient rolling gravity, the ball is 100% infilled.

4. Connect the two hemispheres. Insert the rotating shaft into both hemispheres and gently press it until it clicks into place. Insert the rolling ball, and you're ready to play!

[Note]

Supports are not needed for the hemispheres. If the rolling process jams, slightly trim any overhanging parts with a knife.

The above image is the design interface of my original model. After many design adjustments and optimizations, and considerable effort, I earnestly request that everyone give it a like and boost!

V2.0 Preview: Adding multi-color versions of the design and a limiter function to prevent the ball from falling off when changing tracks.