QuadTrack Fidget — a smooth, four-wheel tracked fidget toy. Snaps together in seconds, runs great, prints easy. Includes 100% + 80% sizes, single- or multi-color.

Meet the QuadTrack Fidget: a compact, four-wheel tracked fidget that feels like a tiny belt drive.
It’s tuned for reliable motion, easy assembly, and fuss-free printing. Tracks release smoothly, and the rounded edges make it comfy to roll in your hand.

Highlights

• Glide-smooth track with four captive wheels
• Snap-fit assembly — no screws, no glue
• Two tested sizes: 100% and 80% (both work perfectly)
• Single-color & multi-color versions (with or without AMS)

Before assembly: after belt comes of bed jig it a bit to loosen up belt hinges

place belt on surface to insert wheels

Assembly (30 seconds)

1. Place the four wheels inside the track loop.

2. 

3. Align the wheel hubs with the base pins.

4. 

5. Press the first base plate down gently across all four wheels at once.

6. 

7. Flip, center the second base, and press until it clicks closed.
   Done!

8. 

Done

Print settings (proven)

• Layer height: 0.16 mm (adaptive slice profile also provided)
• Walls: 3 perimeters (strength)
• Infill: ~25%
• Supports: not required (as oriented)
• Material: PLA or PETG

Scaling

• Provided at 100% and 80%.
• Not recommended below 80% (clearances shrink too much).
• 80% scale needs a bit of jig work to get it loosened

Tuning tips

• If the snap is too tight: try XY -0.1 mm (horizontal expansion) or 101% uniform scale.
• If too loose: XY +0.1 mm or 99% uniform scale.
• A tiny wipe of PTFE on pins can make it buttery.

Multi-color notes

• AMS or manual color swaps supported.
• For Bambu/Orca: enable wipe into infill to keep purge waste low.

Safety: small parts; not for children under 3.