N scale Code 80 MT track 104.2mm length with modular bed and dam

thingiverse

This design features a fully modular railroad track, complete with track bed and embankment, boasting a total length of 104.2mm that perfectly matches the standard lengths of MT tracks no. 4904 or 4902 when three pieces are used. Four different catenary supports are available for this design: https://www.thingiverse.com/thing:1593251 Print Settings Printer: Dremel Idea Builder Rafts: No Supports: No Resolution: 0.15mm Infill: 15% hexagonal 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 To fit the catenary supports, first decide which type of mast to use, with two variants available: one fixed vertically in the embankment and the other fixed below the track bed. Next, use an appropriate tool to cut away the material covering the hole or slot being used. How I Designed This Rail shape The rail uses Code 80 dimensions similar to the popular MT system. Since Code 80 cannot be printed properly with a 0.4mm nozzle, the rail does not feature the slim waist in the middle. This waist is present in the included design file for those who would like to remix. As a result, the rail resembles ARNOLD or Hornby tracks and can be sliced and printed robustly this way. Track, track bed and embankment design This follows the dimensions given in NEM standards, namely NEM 110 and 122. The sleepers are sized like the MT sleepers to fit MT track properly. The gravel of the track bed is sized to be printable with a 0.4mm nozzle in one line; it is therefore not to scale.