N scale Code 70 track 172mm length with modular bed and dam

thingiverse

This design is a fully modular railroad track with track bed and some railroad embankment, offering an impressive display for European locomotives at a total length of 172mm. Four different catenary supports are available for this design: http://www.thingiverse.com/thing:1593251. It serves as a showcase stand for rolling material but can be remixed to support conducting rails. Print Settings: Printer: Dremel Idea Builder Rafts: No Supports: No Resolution: 0.15mm Infill: 10% rectangular Notes: Layer height: 0.15mm; Initial layer: 0.25mm; Nozzle: 0.4mm; Wall strength: 3; Speed: 80mm/s; Material: PLA, 3dk.berlin aluminium silver metallic, 3dk.berlin bronze, Dremel green transparent; Temperature: 220°C Post-Printing: Fitting the catenary supports is a straightforward process. First, decide which type of mast you will use - there are two variants available. One type is fixed vertically in the embankment, while the other is fixed below the track bed. Then, use an appropriate tool to cut away the material covering the hole or slot you will be using. How I Designed This: Rail shape The rail uses Code 70 dimensions (Profile 18 rail according to NEM 120). Since Code 70 cannot be printed properly with a 0.4mm nozzle, the rail does not feature the slim waist in the middle. The included design file contains the waist, allowing for remixing. This results in a rail resembling ARNOLD or Hornby tracks and can be sliced and printed robustly. Track, track bed, and embankment design This follows NEM standards (NEM 110 and 122). Sleepers are sized like standard wooden sleepers, with real-life distances around 60cm. However, this results in a 96cm grid for the sleepers in real life, making the rails appear smaller. Rail fixtures have been estimated from photos and optimized for slicing and printing. The gravel of the track bed is sized to be printable with a 0.4mm nozzle in one line but is not to scale.