Steam Locomotive Ironback 3D Print Model

This detailed scale model captures the rugged design of the classic Ironback steam locomotive. Inspired by real-world industrial rail history, it features intricate boiler and wheel details. Print with supports enabled for the best results on the complex undercarriage.
Size as supplied: 100.0 x 26.7 x 37.5 mm (L x W x H), about 1:185 scale.
Print settings: PLA, 0.12-0.16 mm layers, 0.4 mm nozzle (0.2-0.25 mm for extra-fine detail), 3 walls, 15% infill, 3-5 mm brim.
Supports: needed for undersides and overhangs. Use tree/organic supports touching the build plate only; enable 'support on build plate only' to keep detail faces clean. Support Z distance 0.2 mm and interface layers make removal easy.
Pre-oriented: the 3MF is already placed upright on the build plate (z = 0) - print it as supplied, no rotation needed.

Rescale table (always scale uniformly):
- As supplied: about 1:185 (real object about 18.5 m on its longest side).
- HO 1:87: scale uniformly to 213% (longest side 213 mm).
- OO 1:76.2: scale uniformly to 243% (longest side 243 mm).
- N 1:160: scale uniformly to 116% (longest side 116 mm).
- TT 1:120: scale uniformly to 154% (longest side 154 mm).
- O 1:48: scale uniformly to 385% (longest side 385 mm).

Included files: the 3MF model, a print guide PDF (settings, supports, bed placement, colours, painting, reference views), a dimensions and scaling sheet, orientation and support tips, a real-world inspiration note and a README.

Images: all pictures are digital renders of the 3D model, not photos of a printed copy.