Impossible Spiral Passthrough with Captive Ball
Print Profile(1)
Description
Boost Me (for free)
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This Impossible Spiral Passthrough with Ball is a mesmerizing mechanical puzzle that looks like it shouldn’t work — but it does!
The design features a twisting spiral tower that traps a ball inside a helical cage. The ball appears impossible to insert or remove, creating the illusion that it’s magically locked inside the structure. The spiral geometry allows the ball to travel through the center while staying captured within the twisting outer shell.
This model prints fully assembled and works right off the build plate — no supports, but may print better with a brim with the ball, no extra parts, and no assembly required.
Perfect for:
- Desk toys
- Fidgeting and focus
- Mechanical puzzle collectors
- Demonstrating cool 3D printing geometry
The smooth twisting motion and the satisfying movement of the captive ball make it a great conversation starter.
• Print-in-place mechanism
• Captive moving ball inside spiral cage
• No supports required
• No assembly required
• Smooth passthrough motion
• Great desk fidget
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.
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