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Screwball Puzzle Ball - Threaded Sphere Toy

Screwball Puzzle Ball - Threaded Sphere Toy, design preview, hero tilt

Design preview. Rendered from the file, not a photo.

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What it does

  • Two-piece ball that screws together for satisfying assembly and disassembly
  • Engaging fidget toy and conversation starter for all ages
  • 3D-printed on demand in your choice of durable materials
  • Perfect desktop puzzle or stocking stuffer

The Screwball is a deceptively simple yet endlessly entertaining puzzle ball. Two halves of a sphere screw together with a threaded mechanism, creating a satisfying tactile experience. Also known as the Madcap or Zany ball, it's become a beloved fidget toy and desk puzzle for anyone who enjoys hands-on play.

This 3D-printable design combines form and function, the smooth sphere shape feels great in your hand, while the threaded interior keeps you engaged as you twist and unscrew. Whether you're looking for a desk toy, party favor, or unique gift, the Screwball delivers quirky charm and mechanical intrigue.

13k downloads in the maker community. That is interest in the design on the site it came from, not our sales.

What you get

  • This design prints as one piece.
  • Nothing else to print or buy for this to work.

What it is made of

Designs like this print well in PLA. Compare the materials.

Printed plastic is strong for its size, but it is not metal. We have not load tested this design, so we do not publish a weight rating. Keep it out of a hot car and away from open flame.

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Who made this design

Designed by JamieLaing. We did not draw it.

Shared under Creative Commons, credit and share alike. See the original design