Marble Run of Infinity
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This is a 68 X 70 X 17mm or 133 X 135 X 33mm tested and working Marble run of infinity. PLease leave a make if printed!
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Updated at source:
Model information
- Source
- Printables
- Category
- Other Toys & Games
- License
- Creative Commons — Attribution — Noncommercial
🌀 Marble Run of Infinity
A compact kinetic marble run with an endless looping track that continuously converts gravity into motion.
This design comes in two sizes:
Small (S): 68 × 70 × 17 mm
Large (L): 133 × 135 × 33 mm
Marbles will keep circulating through the loop for a long time, gradually slowing depending on print quality, marble type, and friction — which makes each run slightly unique and interesting to watch.
A sample video is available below.
🧩 Features
No supports required
Beginner-friendly print
Fast print time (2–3 hours depending on settings)
Optimized for smooth marble flow (V2 improved)
Available in 2 sizes
⚙ Print Settings
Layer Height: 0.2 mm (0.16 mm for detail)
Walls: 3
Top Layers: 5–6
Bottom Layers: 4–5
Infill: 15–20% (Grid or Gyroid)
Print Speed: ~50 mm/s
Supports: None (brim recommended)
Orientation: Bottom on build plate
Light sanding is recommended for best performance.
🔧 Quick troubleshooting
Marble stuck → light sanding helps
Doesn’t complete loop → check print quality and layer smoothness
Too slow → use a standard 16mm steel marble
Results vary → depends on printer and filament
🔄 Updates
5/30/2026 – Issue found: marble could not climb hill reliably
5/31/2026 – V2 released with smoother slopes and improved flow
6/21/2026 – V2 tested and confirmed working
🧠 Concept
This model demonstrates energy transfer:
Gravity converts height → speed
Momentum carries marble through the loop
Small losses from friction gradually reduce motion
Each print behaves slightly differently depending on surface finish and tolerances.
licence
This model is for personal, non-commercial use only. You may download, print, and customize it for yourself. Selling, redistributing, or using the model or prints commercially is not allowed without permission from the creator.