Ever since I discovered 3D modelling, I’ve had a dream: to design and print a scale model roller coaster based on my favourite ones. After many visits to theme parks — from Mirabilandia to Disneyland Paris, via Universal Studios — I found myself increasingly fascinated not only by the thrill of the ride, but above all by what lies behind it: the structure, the mechanics, the design.

So I decided to start with something simple but iconic: the straight launch section of iSpeed, the Intamin roller coaster at Mirabilandia. I faithfully reproduced the support beam and tubular frame with SolidWorks, trying to maintain the actual proportions and respecting the characteristic style of Intamin coasters: crossed diagonal tubes, vertical supports with circular bases and a sturdy but lightweight support structure.

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The project is on a small scale, but I have tried to maintain proportions consistent with the real version. The two outer tracks were made with 6 mm diameter tubes, spaced 3.5 cm apart (internal measurement), so that a bogie on bearings could be fitted later. The central beam acts as the main support, while the diagonal tubes (cross-bracing) echo the Intamin style.

Technical specifications of the 3D model:

  • Approximate scale: 1:40 compared to the real version
  • Coaster type: Intamin Accelerator – Straight launch section
  • Track length: 20 cm
  • External track diameter: 6 mm
  • Internal distance between tracks: 3.5 cm
  • Thickness of central load-bearing beam: 10 mm
  • Model height: 9 cm
  • CAD software: SolidWorks
  • 3D printer used: Creality Ender 3 V2
  • Printing material: PLA (white, opaque)
  • Joining method: interlocking + cyanoacrylate glue
  • Structure: vertical and diagonal crossed tubes
  • Estimated printing time: ~24 hours

The modelling was done entirely in SolidWorks, using parametric sketches and sweep functions for the tubes, extrusions for the mounting bases, and fittings for the structural connections. I took care to avoid sharp corners or overly thin parts to ensure a solid print.

Here you can download the file in STL format, ready for 3D printing:

Download

If you enjoyed this model, you could make a small donation to help me continue creating free 3D models. It would be a great help to me. Thank you very much for your support!