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

thingiverse

This design is a fully modular railroad track with track bed and some railroad embarkment. Total length is 104.2mm which fits to the standard length of MT tracks no. 4904 or 4902, if you use three pieces. There are four different catenary supports available for this design: http://www.thingiverse.com/thing:1593251 Print Settings Printer: Dremel Idea Builder Rafts: No Supports: No Resolution: 0.15mm Infill: 15% hexagonal Notes: Layer heigth: 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 How to fit the catenary supports... First decide which type of mast you will use, there are two variants. One type is fixed vertically in the embarkment, the other is fixed below the track bed. Then use an appropriate tool to cut away the material which is covering the hole or slot you will be using. 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, if you would like to remix. So the rail resembles ARNOLD or Hornby tracks and can be sliced and printed robustly this way. Track, track bed and embarkment 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.