Test Track

14 Jan 2026 | by Marta

This is an experimental linear marble track designed specifically for 12.7mm (1/2 inch) steel ball bearings.

🛠️ Project Details

Test Track

I created this model as a reference tool to investigate optimal track tolerances, rolling resistance, and fit for this specific marble size. It is a great starting point if you are designing a larger marble run and need to test how the ball interacts with the rails before committing to a massive print.

Ideas:

  • Purpose: Testing track width, depth, and friction.
  • Design: Minimalist, low-profile linear rail.
2025