This gyroscopic keychain features multiple freely spinning concentric rings, creating a smooth and satisfying fidget motion in a compact, everyday-carry form.

Designed to be:

• enjoyable to spin and fidget with
• compact and pocket-friendly
• printable as a single assembled part (no assembly required)

The internal clearances are tuned for reliable movement straight off the printer. Ideal as a keychain, desk toy, or small gift print.

Features

• Freely rotating concentric rings
• No supports required
• Prints fully assembled
• Compact and durable design

Print Recommendations

• Material: PLA or PETG
• Layer height: 0.2 mm
• Infill: 15–25%
• Supports: No
• Brim: Optional (recommended for better bed adhesion)

If rings feel tight after printing, gently flex or rotate them to free up movement.

Notes

Designed primarily as a fidget keychain, not a load-bearing part.
Scaling up slightly (102–105%) can improve motion depending on printer tolerances.