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Mechanical Gear Ratio Fidget 4 Variations  3D Printer File Image 1
Mechanical Gear Ratio Fidget 4 Variations  3D Printer File Image 2
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Mechanical Gear Ratio Fidget 4 Variations

SKS.3D.WS avatarSKS.3D.WS

March 18, 2026

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Description

Experience the physics of motion in the palm of your hand with the SKS.3D.WS Gear Ratio Fidget! This unique sensory tool isn't just a spinner—it’s a mechanical demonstration of gear reduction and increase. Depending on which gear you drive, you can watch the secondary stack spin with lightning speed or move with deliberate, high-torque precision.

Designed for those who love mechanical engineering and rhythmic motion, this "stacked" gear system provides a fascinating visual and tactile contrast. As you rotate the main gear, the synchronized movement across the different ratios creates a hypnotic effect that is perfect for deep focus, stress relief, or STEM enthusiasts.

 

Gear ratio of 1:1.5 per or 1:0.67 per

 

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FEATURES

  • Variable Speed Feedback: Feel the difference in resistance between the high-speed and low-speed gear stacks.
  • Synchronized Motion: Precision-meshed gears ensure smooth, continuous rotation without slipping or jamming.
  • Print-in-Place: Engineered to be printed as a single, functional unit. No complex assembly or tiny pins required—just pop it off the bed and start spinning!
  • Compact & Durable: A sturdy frame protects the internal gear teeth, making it a perfect pocket-sized EDC (Everyday Carry) tool.

PRINT INSTRUCTIONS

  • General Layer Height: 0.2mm 
  • Walls: 3–4 perimeters to ensure the gear axles and teeth are rigid enough for thousands of rotations.
  • Supports: Designed to be printed 100% support-free.

PERSONAL USE ONLY Purchasing or downloading this file does not give you the right to sell physical prints of this design.

COPYRIGHT PROTECTED FILES All SKS.3D.WS Designs are protected under copyright law. Your purchase does not give you the right to sell or distribute the digital files in any way.

COMMERCIAL LICENSE Do you want to sell prints of our models? You can purchase commercial licensing by joining the Commercial License in our Patreon or Thangs3D and unlock the opportunity to share this design with your customers!

 

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License:

Standard Digital File License

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