Controls

Select Track Layout Track Layout:

Choose the underlying geometric math structure that controls the flow of your descending marble run.

Track Parameters

Base Bounds

Radius (Top):

55mm

Total Height:

130mm

Spiral Turns:

3.5revs

Track Profile (U-Channel)

Track Width:

16.0mm

Track Depth:

10.0mm

Channel Radius:

5.0mm

Complex Perturbations

Wave Amplitude:

6.0mm

Wave Frequency:

6hz

Slicing & Supports

Supports Mode: Pillar Diameter:

4.5mm

Pillar Spacing:

15steps

Central Column: Core Radius:

16.0mm

Simulation & Styling

Real-Time Roll Simulator

Show Marble: Marble Speed:

1.0x

Marble Radius:

4.0mm

Track Color Picker

Track Color:

Export 3D Model

Export the generated track and its support matrix. This output consists of a manifold geometry ready for slicers like Cura or Bambu Studio.

Tip: When exporting for FDM 3D printing, STL files are standard. Make sure supports are activated if printing at large scales with shallow angles.

3DMarbel

Design a parametric marble run in a live 3D view, tune its dimensions and supports, watch a simulated marble roll through it, and export the model.

What this tool does

3DMarbel generates a descending track from adjustable parameters. Choose a Classic Helix, Winding Serpent Wave, or Zig-Zag Spiral layout, then preview the geometry in the canvas as you change dimensions, channel settings, waves, supports, and the central column.

Who this is for

Makers exploring custom marble-run geometry
3D-printing hobbyists preparing a track concept for a slicer
Students learning how parametric dimensions affect a 3D model

How to use this tool

Choose a layout from the Layout tab
Adjust radius, height, turns, U-channel dimensions, wave settings, and support options in Params
Use Simulate to show the physics ball and tune its speed or radius
Open Export and download an STL, GLB, or OBJ file for your next workflow

Inputs

Inputs are the layout selector and range controls for track bounds, spiral turns, channel profile, wave amplitude and frequency, vertical pillar supports, central core, marble settings, and track color. The model is generated in the browser from these values.

Outputs

The canvas shows the generated 3D track, optional support pillars and core, and an optional rolling marble preview. Export buttons create STL, GLB, or OBJ downloads; inspect the result and confirm clearances and printability in your own 3D-printing workflow.

Example use cases

Compare helix, wave, and zig-zag track concepts
Prototype a printable track with different support spacing and channel sizes
Export a geometry draft for inspection in a slicer or 3D editor

Explore more SolvProb tools

Frequently asked questions

Are the exports ready to print?

They are geometry exports for inspection in a 3D editor or slicer. Confirm scale, clearances, wall thickness, supports, and printability before manufacturing.

Is the marble simulation physically accurate?

No. The rolling preview is illustrative and does not validate real friction, collisions, tolerances, or whether a physical marble will complete the run.

Why might the 3D view not load?

The viewer requires JavaScript, the Three.js module, and WebGL support. Older or restricted browsers may not display the scene.

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